Dear J.,
I haven't been through quite what your family is experiencing, but my son had a lot of other troubles when he was younger and I know how difficult it can be to have someone you love and care about struggling so much.
I do, however, know several families with children who have been able to overcome or at least greatly reduce symptoms associated with ADHD, obsessive compulsive disorder (OCD), and even autism.
I'd be happy to get some information to you if you're interested. It's pretty great how different their kids are now, so much happier. I guess what they did worked out a lot better than drugs and various therapies. I would even make some introductions so you can talk with my friends directly since they know better what your daughter is experiencing than I do.
Send me a private message with your number and when you'd like me to call and set something up.
Wishing you the best success with your daughter! I KNOW WITHOUT A DOUBT that she can helped. You've just got to find the right thing for her.
~A.