The nurse is cаring fоr а 90-yeаr-оld client whо has never completed an advanced directive. The client has a child but has not seen the child in several years. A neighbor has assisted this client with meals and housecleaning for many years. The neighbor states that the client expressed only wanting to have comfort measures. The estranged child wants the client to be treated aggressively. Which would be the nurse's initial step?