Moral principles and ethical theories

A patient is getting ready to leave the hospital and requests pain medication before going home. She goes so far as to ask for Dilaudid by name, a very powerful drug, with strong risk of addiction and dependence. It seems to you, her physician, that her pain is easily controlled with less powerful drugs. She doesn’t seem in pain to you as she packs her bags, and you know she’s not taken any pain medications recently. Your fellow doctors become angry at this request and force the patient to leave the hospital without medications, going so far as to call security to have her escorted out. Consider the moral positions of both the patient and the physician who called security. What moral principles and ethical theories are involved here? How does paternalism balance against autonomy? What is the ethical course of action?