I'd probably ask for the pre-algebra with accommodations and work to ensure math fluency this summer on the places she's been uneven.
Some things to consider are:
Will you be able to help her with more thorough explanations after school if she needs it?
Do you think the teacher will be a good fit?
She'll have geometry sooner but I'm inclined to think strong verbal skills will help her enough.
She may like the Khan Academy videos on youtube since there is lots of verbal explanation of the math.
http://www.youtube.com/profile?user=khanacademy&view=playlists Reading this(and understanding she doesn't have Aspergers or NLD), one accommodation could be to present problems verbally.
http://books.google.com/books?id=6t...i=book_result&ct=result&resnum=5 
