I have a stepsister I love dearly that has a bad liver. She has to go to the hospital constantly for blood transfusions, and feels fatigued all the time. They say she'll die within a year or two if she doesn't get a new liver. In regards to your friend the doctors are doing what they can about her illness, so don't worry about her medical situation. Be a friend to her, be supportive and kind. That will mean the most to her, far more then any medical treatment.