In McCoy v. McCoy, trust beneficiaries (daughters) sued the trustee (father) for maintaining a claim against a third party (mother) after they notified him of their opposition under section 113.028 of the Texas Trust Code. No. 08-23-00119-CV, 2023 Tex. App. LEXIS 6604 (Tex. App.—El Paso August 25, 2023, no…