Public schools are not supposed to accommodate her religious beliefs.
Why do you say that?
Where ever did you get that idea? The government is expressly forbidden from infringing upon the free exercise of religion and despite the ACLU’s confusion over the First Amendment. They know government shall not establish a religion. School do indeed have to accomodate a student’s religion. This is why attempts to ban student bible readings, afterschool Christian clubs, the wearing of religious jewelery and other expressions of a student’s faith are sucessfully challenged in court.