It looks like depression. My son has a short period

of depression when he was about 11 or 12. I was shocked when he told me he was depressed. I remembered when I took him to have his annual physical check up, his doctor said if you feel depressed, go volunteer. Helping others will bring you happiness. We talked about it too. He agreed to do something but he soon got over it and didn't volunteer at that time. I remembered that difficult time. It was like what you are going through right now. My son would try to hit himself too when he was mad. I was very concerned and didn't know how to help him and felt very bad and tired. I just wanted him to be happy like a normal kid. We talked a lot about his depression. There were a lot of misunderstanding between him and us. I think communication helped him in recovering. Maybe can take her to see a psychologist? try volunteering? One thing for sure is that you need to be very patient with her. She needs you right now. good luck! She will get through it. PPL told me it was very normal.