I love that PA requires kids to be accomidated, and provides a complaint process, but you have to ask yourself, is Differentiation really going to give your DD what she needs?
Do you have any indication of her LOG? Are there any kids in her grade that she could sit near and have a reasonable challenge if differentiated material was provided. There is so much more to school than just what the teacher provides, that I hope you will ask for subject acceleration IF there are no peers for her.
If you can't find a real advocate, find a friend who owns a suit and ask them to come and take notes. Better than nothing!
Love and More Love,
Grinity