She in the end did what was right. Your beloved government overlords lost a round. Get over it. Agreeing not to say it was wrong IF it violated her conscience. How could it be righted? Remaining silent? The girl {woman} had a message to say. It was placed on her heart to say it obviously and was a matter of conscience. At that point their is a thing called repentance. It doesn't mean well OK you're off the hook for the speech it means making the speech {doing what was right to start with} and living with it afterward. You of all persons in here should understand that concept. The school was wrong to censor that message. It wasn't a verbal attack on anyone.
I am surprised others here would find her situation in the wrong.
From Wiki,
[...] Thomas Paine in his pamphlet, Common Sense (1776):
"As to religion, I hold it to be the indispensable duty of all government, to protect all conscientious professors thereof, and I know of no other business which government hath to do therewith . . .
The Virginia Statute for Religious Freedom was written in 1779 by Thomas Jefferson. It proclaimed:
"[N]o man shall be compelled to frequent or support any religious worship, place, or ministry whatsoever, nor shall be enforced, restrained, molested, or burthened in his body or goods, nor shall otherwise suffer, on account of his religious opinions or belief; but that all men shall be free to profess, and by argument to maintain, their opinions in matters of religion, and that the same shall in no wise diminish, enlarge, or affect their civil capacities."
In U.S. law, freedom of religion is codified in the First Amendment to the United States Constitution, which declares:
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof"