Sorry to hear about your daughter!
Here is a good site for more information: http://digestive.niddk.nih.gov/ddise...autoimmunehep/
Here is a quote from the site which is reassuring:
"Treatment works best when autoimmune hepatitis is diagnosed early. With proper treatment, autoimmune hepatitis can usually be controlled. In fact, recent studies show that sustained response to treatment not only stops the disease from getting worse, but also may actually reverse some of the damage"
I hope this helps.