For the record, I don't hear a voice when I read, but I do when I write.

If your dd is getting a 504 plan, she will only get accomodations, not instruction. You should ask for an assistive tech evaluation. Your dd could use a laptop or a portable keyboard with word prediction software. It will help with spelling and handwriting.

How is her punctuation and grammar? If you think she needs remediation, she's going to need an outside tutor or an IEP instead of a 504 plan.