I also don't understand why the school would refer her for a speech evaluation if their concerns were behavior and motor skills. I do look at schools' special education systems with a critical eye because, as someone up thread alluded to, minorities and boys are very over-represented. That trend tells me that *something* else is going on with diagnoses.
I would second Webjockey's recommendation for an independent evaluation. If you're open to traveling out of state, I have a clinic that I recommend highly for children with possible speech/language delays. Or if you have a local university with an SLP or OT department, they might have clinics that do evaluations and therapy services. My son has speech therapy twice a week at our local university, and the services cost much less than a private SLP.