(In this case, son held a durable power of attorney (DPOA) from mother, while daughter held a power of attorney for health care (health care POA). Following Harrod v. Country Oaks Partners, LLC (2024) 15 Cal.5th 939, the decision reverses the trial court’s ruling that only the daughter had authority to sign arbitration agreement for mother when she was put in admitted to a senior health care facility. However, the decision remands the case to determine first whether the arbitration agreement is otherwise enforceable if signed by the right party. It also remands for the trial court to determine whether, if the arbitration agreement is otherwise enforceable, the court should exercise its discretion under CCP 1281.2(c) to stay arbitration since the heirs’ wrongful death claims are not arbitrable and arise from the same allegedly wrongful acts as the mother’s survival action which is arbitrable.)