Could it be possible that your friend does not remember the actual abuse? I started remembering my abuse at 11 several years ago, but I was in my forties before I remembered. And I did a lot of self-destructive behavior, including drinking, to kill the pain that I felt but did not yet realize the reason why. I believe the best thing you could do for your friend is to encourage her to see a therapist. For herself and for you. Don't know if this helps any but I hope you find a way to deal with it.

Yokus