Have you looked at this checklist?

http://www.aspergersyndrome.org/Articles/The-Australian-Scale-for-Asperger-s-Syndrome.aspx

You can see that some characteristics (like motor clumsiness) overlap, and the teacher may be focusing on those.

I would be more likely to trust the judgments of the neuropsychologist and the neurologist over the teacher's. Still, if you go through the checklist and find that the description strongly resembles your DD, I think it would be worthwhile to investigate further. Girls, especially very intelligent girls, are underdiagnosed for Asperger's because they are able to compensate for their weaknesses. My personal opinion is that a diagnosis is more than a label, it is a path toward understanding and helping your child.