I'm really sorry about what you and your daughter are going through. We had a similar experience with my 14 year old daughter and we are finally coming up for air again after she started a regimen of low dose antidepressants. We use a practice in Fairfax called "Child and Famiky Counseling Group." They have both psychiatrists and psychologists. We have a separate psychologist (not from this practice group) but we go to Thad Garland, M.D. at CFCG for medication eval and management. I like him because he specializes in teens and children, is very responsive (especially for a psych doc), and is proactive, but cautious in what meds are prescribed and how much. I was not thrilled with the idea of working with a psychiatrist because I and many others have had not so great experiences wit them in the past, so I understand your nervousness. Most M.D.'s aren't warm and fuzzy (at least in my experience), but my priority in going the medication route was being able to trust the psychiatrist both in their competence and also in the way they approached evaluations and treatment. I found Dr. Garland to be very balanced in offering guidance, but also in listening to how we were most comfortable starting med trials (e.g., did we want to start aggressively, more conservatively, etc.). He takes the parent's view of what their child needs into consideration.
I've also heard good things about the others docs in that practice, so you might want to take a look at all of them and see who seems most suitable for your needs. Best of luck.
http://www.childandfamilycounseling.com/