What are the dimensions of ethical dilemma

What are the dimensions of ethical dilemma in this case:A 96-year-old male patient is admitted to the ICU with terminal liver cancer. He is confused and disoriented, very skinny and appears underfed, and is covered with bruises, which are common in patients with liver disorders. His daughter, who is a naturopathic physician, insists that she can cure her father by administering unknown substances, some of which smell like feces and look like tar, down his NG tube. He is clearly in pain after she does this. She insists that these are life-saving interventions on her part, but the nursing and physician staff caring for the patient are very upset and concerned that she is hastening his death. They have come to you for help. What are the issues