I am 24 years old and was diagnosed with Endo three years ago. I had two laparoscopies done and that really helped to deal with the pain, but eventually it came back. I then started on Lupron-Depo for six months and that actually helped me more than surgery, the only thing is that you can only be on Lupron for six months at a time. While on Lupron I hardly had any pain and I didn't have a period for the six months plus 3 after stopping treatment. I suggest for your daughter to try lupron, it is definitely worth it. The side effects are not very pleasent, it makes you go through a fake menopause but it is better than dealing with the pain.