The client suffered cardiac arrest, was resuscitated and has now been on a ventilator for several days.The client had a written advance directive which the spouse brought from home.The primary care provider (PCP) is encouraging the spouse to consent for placement of a percutaneous endoscopic gastrostomy (PEG) tube, which is contrary to the client's advance directive.After the PCP leaves, the spouse states, "I wish I knew what my spouse wanted.”. What is the best reply by the nurse?