In Mittelsted v. Meriwether, the decedent changed his will and beneficiary designations on bank accounts to leave everything to his half-brother. No. 14-21-00755-CV, 2023 Tex. App. LEXIS 1020 (Tex. App.—Houston February 16, 2023, no pet. history). The decedent’s sisters challenged these transactions for mental incompetence, and the jury found…