With anxiety, OCD, attention problems, long monologues on her own tangents, low(er) comprehension, higher pri, a few other clues I suggest you read up about girls with Aspergers and see if you think it fits.

I am not sure how much reading you have done on girls and Aspgergers but I really recommend looking at these:

This list was a massive A-HA! (oh no!) moment for me:
http://suelarkey.com.au/media/Tip_Sheet_-_Girls_with_an_ASD.pdf

This book was really useful for me, as are the two documents on the page:
http://www.help4aspergers.com/pb/wp_a58d4f6a/wp_a58d4f6a.html