A physician orders a nasogastric (NG) tube for a young adult diagnosed with end-stage ovarian cancer and suspected of having a bowel obstruction. The newly hired nurse explains the procedure and rationale for NG tube placement. The client refuses to consent to NG tube placement, stating, 'I would rather keep vomiting than have the tube in my nose.' Following the American Nurses Association Code of Ethics for Nurses, what should the nurse do next?