Is there a special education teacher in charge of managing her services? Who essential leads her IEP team (not her regular ed teacher)? Can you start by going to that person and telling them that you don't think that this particular classroom teacher is a good match for this particular girl? Does she have positive touch built into her day? (If all touch only happens within the connotation of something negative happening, that could cause some strong responses).
It sounds like you're doing some amazing work with her already.