What Is the Diagnosis?

My friend died 6 months ago without some exact diagnose. Since her parents refused a medical research after her death the true diagnosis left unknown. So I am interested if someone is familiar with the following symptoms and which disease she might have died from.
She was 20 years old when she died. Since I have known her she was suffering from mild anemia. Non of the medications helped to improve her anemia. 2 years before she died she start having low grade fever lasting around 10 days and then going away. Around 6 months before she died, something like a tumor appeared on her leg. After the biopsy, the doctors said that it is not a tumor. That thing was going bigger until it went in opened wound. A short after her whole body was covered with such wounds. The first diagnosis was autoimmune hepatitis and she was put on cortico-steroids. But there was no improvement. Her legs swelled a lot. When she was hospitalized her internal organs started to fail and she had very high fever.
The doctors could not find the exact diagnosis, but they were sure that it was some kind of autoimmune disease. It was not leukemia or some kind of tumor. Days before she died she developed high anemia. When the doctors made her a transfusion of the blood, her blood coagulate and hours later she died.