Emilia Duke appeals from an order setting aside a deed granting her one acre of property belonging to her late stepfather, Calvin Leeroy Shinpaugh (Mr. Shinpaugh). We hold that the trial court did not err in applying the presumption of undue influence because appellant and Mr. Shinpaugh were in a confidential relationship. Nonetheless, we hold that the trial court erred in 1) excluding a neighbor’s testimony that Mr. Shinpaugh intended to give one acre of land to appellant before he died, 2) finding the power of attorney by which appellant conveyed the land to herself by a quitclaim deed was the product of undue influence, and 3) finding that, in making the quitclaim conveyance to herself, appellant overreached the powers granted to her as Mr. Shinpaugh’s power of attorney. Accordingly, we affirm in part, but we reverse the trial court’s order setting aside the deed, reverse the order ejecting appellant from the entire parcel ofland, and remand for a new trial.
I. Facts
Mr. Shinpaugh and appellant’s mother, Frances Shinpaugh, owned 2.9 acres of property in Fayetteville, Arkansas, as tenants by the entirety; their home is located on the northernmost acre. Pursuant to a written agreement and a power-of-attorney form executed by Mr. Shinpaugh in her favor, appellant conveyed the middle acre of this property to herself shortly before Mr. Shin-paugh died. Appellees are Joseph Shinpaugh and Rebekah Ogle, Mr. Shinpaugh’s children. Acting as administrators of his estate, appellees filed suit to have the deed set aside and to have appellant removed from the property.
Appellant began living with the Shinpaughs in 1997 due to her mother’s poor health. It is undisputed that appellant took care of Mrs. Shinpaugh from that point, and also took care of Mr. *334Shinpaugh after his health declined. Additionally, she performed household chores and property maintenance.
Mrs. Shinpaugh died intestate on May 15, 2005. Appellant testified that before her mother died, Mr. Shinpaugh agreed that appellant would be given one acre of their property. Ogle admitted that she spoke with Mr. Shinpaugh about giving property to appellant both before and just after Mrs. Shinpaugh’s funeral, but she maintained that her father could not decide which acre to give to appellant.
Appellant continued to live with and care for Mr. Shinpaugh after her mother’s death. A few hours after Mrs. Shinpaugh’s funeral, after Mr. Shinpaugh met privately with appellees, appellant approached him to discuss “legitimizing” her situation. Within the next few days, she and Mr. Shinpaugh drafted a document entitled “Agreement,” which purported to give her one acre of Mr. Shinpaugh’s property in recognition of her long-time assistance to the Shinpaughs. This document was typed by appellant’s nephew, Calvin Duke, on a computer belonging to John Holmberg, Mr. Shinpaugh’s long-time neighbor.
Mr. Shinpaugh was hospitalized on May 23, 2005, due to congestive heart failure. He signed the agreement the next day, on May 24, 2005, while he was still hospitalized. Ogle did not dispute that her father signed the agreement; appellant did not sign the document.
The following day, May 25, 2005, while Mr. Shinpaugh remained hospitalized, he signed a durable power of attorney in favor of appellant, that was prepared by his attorney. Appellees conceded at the hearing that Mr. Shinpaugh signed this form and further conceded that the power of attorney was valid.
After Mr. Shinpaugh’s release, appellant continued to live with and care for him. On December 14, 2005, Mr. Shinpaugh suffered a stroke; he was again hospitalized until January 27, 2006. He was thereafter taken to a rehabilitation center, where he died on March 5, 2006.1 Ogle admitted that her father retained his faculty to understand what was being said to him and to respond appropriately to the end of his life.
On February 8, 2006, approximately one month before Mr. Shinpaugh died, appellant deeded one acre of Mr. Shinpaugh’s *335property to herself, pursuant to the power of attorney. After Mr. Shinpaugh died, appellant continued to live in the Shinpaugh home but never notified appellees that she deeded the property to herself. Appellees found the deed while searching property records to discover the name of the mortgage company holding a reverse mortgage on their father’s property. They filed suit in the instant case, alleging, inter alia, that Mr. Shinpaugh was incapacitated from December 14, 2005, onward, due to his health conditions, and that appellant breached her fiduciary duty in conveying part of his property to herself. They also filed a detainer action and were granted immediate possession of the entire 2.9 acres of property.
In its written order, the trial court found that a confidential relationship existed between appellant and Mr. Shinpaugh and that the agreement was testamentary in nature, though it did not qualify as a will. However, the court made no finding that appellant procured the agreement. Further, even though appellees never challenged the validity of the power of attorney executed by Mr. Shinpaugh and conceded that the form was valid, the trial court determined that appellant failed to overcome the presumption that the agreement and power of attorney were the product of her undue influence. Finally, the court found that appellant breached her fiduciary duty and that, if the power of attorney was valid, appellant exceeded her power granted under it. Accordingly, the trial court ordered that the deed be set aside and entered a final judgment of possession in appellees’ favor of the entire 2.9 acres of property.
II. Presumption of Undue Influence
We first affirm the trial court’s determination that the presumption of undue influence arose, which appellant was required to rebut. Appellant argues that the trial court erred in finding that the agreement was not a will but yet determined that the presumption of undue influence arose.
The standard of review of a circuit court’s findings of fact after a bench trial is whether those findings are clearly erroneous. See First Nat’l Bank v. Garner, 86 Ark. App. 213, 167 S.W.3d 664 (2004). A finding is clearly erroneous when, although there is evidence to support it, the reviewing court on the entire evidence is left with a definite and firm conviction that a mistake has been made. See id. In reviewing a trial court’s findings of fact, we give due deference to the trial judge’s superior position to determine *336the credibility of witnesses and the weight to be accorded to their testimony. See Holaday v. Fraker, 323 Ark. 522, 920 S.W.2d 4 (1996).
To be valid as a will, an instrument must be executed with testamentary intent, which is the intention to dispose of one’s property upon one’s death. See Edmundson v. Estate of Fountain, 358 Ark. 302, 189 S.W.3d 427 (2004). We affirm on this point because the agreement contained contradictory terms indicating both that it was a will and that it was not; thus, the trial court could have determined that the agreement was not a will. Moreover, regardless of the nature of the agreement, the undue influence presumption arose because the trial court determined that appellant and Mr. Shinpaugh were in a confidential relationship — a finding that appellant does not challenge on appeal. See Wesley v. Estate of Bosley, 81 Ark. App. 468, 105 S.W.3d 389 (2003).2
III. Mr. Holmberg’s Testimony
Although we agree that the presumption of undue influence arose, we reverse, first, because the trial court erred in finding that the agreement was the product of undue influence without allowing Mr. Shinpaugh’s neighbor, John Holmberg, to testify that Mr. Shinpaugh told him before he died that he wanted to give appellant one acre of land. Appellees raised a hearsay objection when Mr. Holmberg testified that he was aware of the agreement and that he and Mr. Shinpaugh had discussions about it. The trial court assumed that Holmberg would testify that “He [Mr. Shin-paugh] told me he wanted to give Emilia Duke an acre.” The trial court ruled that any such testimony would be inadmissible hearsay.3 Appellant argued that the testimony was admissible pursuant to Ark. R. Evid. 804(b)(3) as a statement against Mr. Shinpaugh’s interest. We will not reverse a trial court’s ruling on the admission of evidence unless the trial court abused its discretion. See O’Fallon v. O’Fallon, 341 Ark. 138, 14 S.W.3d 506 (2000).
*337The trial court’s exclusion of Holmberg’s testimony was an abuse of discretion because Mr. Shinpaugh’s statement, prior to his death, that he intended to give the property to appellant, was a statement against the pecuniary interest of his estate. See id. Pursuant to Rule 804(b)(3), a statement against interest is admissible if the declarant is unavailable as a witness. A statement against interest is
[a] statement which was at the time of its making so far contrary to the declarant’s pecuniary or proprietary interest, or so far tended to subject him to civil or criminal liability or to render invalid a claim by him against another or to make him an object of hatred, ridicule, or disgrace, that a reasonable man in his position would not have made the statement unless he believed it to be true.
In O’Fallon, the trial court found that the decedent made an inter vivos gift to his son, after the court admitted testimony that the decedent stated that he “was buying” or “had bought” the vehicle for his son. The O’Fallon court affirmed the admission of this testimony under Rule 804(b)(3), as an admission against the pecuniary interest of the decedent’s estate. Similarly, here, Mr. Shinpaugh’s statement would constitute a statement against the pecuniary interest of his estate because a successful property transfer, whether testamentary or inter vivos, would reduce the body of what would be included in Mr. Shinpaugh’s estate.
Appellees unpersuasively attempt to distinguish O’Fallon on two grounds. First, they argue that any statement Mr. Shinpaugh made would be made while under appellant’s undue influence. However, whether Mr. Shinpaugh made any statement under the undue influence of appellant would go to the weight of the statement, not its admissibility. Second, they argue that the issue in O’Fallon was whether the decedent had divested himself of the title to his vehicle and that “there can be no question that Leeroy Shinpaugh did not alienate or divest himself of title to the acre of his property while under appellant’s undue influence.” To the contrary, whether Mr. Shinpaugh divested himself of title to the property when he signed the agreement is the precise issue.4
*338More convincing is appellant’s argument that she was prejudiced by the trial court’s exclusion of Holmberg’s testimony because he was a disinterested, third-party witness whose testimony was critical to prove that Mr. Shinpaugh acted of his own accord and did not agree to convey the property to appellant due to her undue influence. See Estate of Garrett, 81 Ark. App. 212, 100 S.W.3d 72 (2003) (citing as evidence supporting a finding of no undue influence the fact that two disinterested witnesses testified that the decedent was of sound mind when he executed his will).
Here, due to the trial court’s exclusion of Mr. Holmberg’s testimony, it erroneously concluded that the agreement was the product of appellant’s undue influence without considering all of the relevant, admissible evidence that Mr. Shinpaugh agreed to give appellant the property before he died. Appellant was prejudiced by the ruling to exclude Holmberg’s testimony, as she had the burden of proving donative intent and the absence of undue influence. Because appellant was prejudiced by this evidentiary ruling, we reverse and remand for a new hearing.
III. Power of Attorney
We further reverse the trial court’s finding that the power of attorney was obtained as the result of undue influence because appellees never developed that argument below. To the contrary, appellees conceded below that the power of attorney was valid. Appellees did not assert in their complaint that the power-of-attorney form was the result of appellant’s undue influence. Rather, they simply asserted that she breached her fiduciary duty in deeding the property to herself because Mr. Shinpaugh never agreed to convey any of his property to her.
Nor was the issue tried by the implied consent of the parties. Rather, appellees expressly conceded during the hearing that the document was valid. When Ogle testified that Mr. Shinpaugh revoked the power of attorney, appellees’ attorney halted this line of cross-examination and conceded that the power of attorney was valid as written. Because this is so, even though evidence was *339submitted concerning the events surrounding the drafting of the document, the trial court had no basis for determining that the power of attorney was the product of undue influence.
The trial court further erred in alternatively finding that if the power of attorney was valid, appellant exceeded her authority and powers granted under the terms thereof and breached her fiduciary duty. Contrary to the trial court’s oral finding, the power-of-attorney form authorized appellant to deed the property to herself.
The form is entitled, “General Durable Power of Attorney.” It states that Mr. Shinpaugh designates appellant to act in his name and for his benefit as follows:
1. GENERAL GRANT OF POWER. To exercise or perform any act, power, duty, right, or obligation whatsoever that I now have or may hereinafter acquire, relating to any person, matter, transaction or property, real or personal, tangible or intangible, now owned or hereinafter acquired by me, including, without limitation, the following specifically enumerated powers. I grant to my agent full power and authority to do everything necessary in exercising any of the powers herein granted as fully as I might or could do if personally presentf]
(b) POWER TO ACQUIRE AND SELL. To acquire, purchase, exchange, grant options to sell, and sell and convey real or personal property, tangible or intangible, or interest therein, on such terms and conditions as my agent shall deem proper[.]
(Emphasis added.)5
Thus, the plain terms of the power of attorney authorized appellant to convey Mr. Shinpaugh’s real property on such terms and conditions as she deemed proper. Obviously, she would deem it proper to convey property to herself that Mr. Shinpaugh *340had previously agreed to convey to her. In the simplest terms, consensual self-dealing is permitted. See Cole v. Laws, 349 Ark. 177, 76 S.W.3d 878 (2002) (stating the guiding principle of the fiduciary relationship is that self-dealing is strictly proscribed unless the other party to the relationship consents). Because the valid power of attorney authorized appellant to convey Mr. Shinpaugh’s property, if he, in fact, agreed to convey the instant property to her, then appellant’s self-dealing would be permitted. Hence, on remand the trial court should consider the effect of the power of attorney in light of our reversal on this point as well as its new findings regarding the agreement.
V. Conclusion
We affirm the trial court’s finding that the presumption of undue influence arose because appellant and Mr. Shinpaugh were in a confidential relationship. We reverse and remand because the trial court erroneously determined that the agreement was the product of undue influence without considering the relevant, admissible testimony that, before he died, Mr. Shinpaugh intended to give appellant one acre of his property. We also reverse because the trial court erroneously determined that the power of attorney was the product of undue influence even though appellees conceded that the document was valid, and because the court erroneously determined that appellant exceeded her powers granted under that document.
This, in turn, requires us to reverse and remand the order of judgment and possession ejecting appellant from the entire 2.9 acres of land. If the trial court determines on remand that appellant is entitled to receive one acre of Mr. Shinpaugh’s land, it should enter an appropriate order based on that finding.
Affirmed in part; reversed and remanded in part.
Bird, Vaught and Heffley, JJ., agree.
Marshall, J., concurs.
Pittman, C.J., Gladwin, Robbins and Baker, JJ., dissent.