In Cortes v. Wendl, an elderly woman signed a deed conveying her mineral rights to two individuals. No. 06-17-00121-CV, 2018 Tex. App. LEXIS 4457 (Tex. App.—Texarkana June 20, 2018, no pet.). When the woman’s nurse and friend learned of the transaction, she obtained a power of attorney and filed a lawsuit on the woman’s behalf,