You are a physician who has finished his or her day and decide it's appropriate to leave on time for the first time in months. You have promised to meet your family for dinner. You suddenly receive a phone call from Mrs. Black, a 87 year old patient in a nursing home long time, who wishes that you attend to her long-standing condition. She has been patient of yours for 15 years and refuses to see another doctor. What issues are involved? How would you approach this situation?