"The First Amendment prohibition on government endorsement of religion exists to protect the minority from the majority,"
WRONG. The 1A is a prohibition against Congress "respecting an establishment of religion", i.e.
establishing a Federally-mandated religion. Otherwise it's freedom of religion, not freedom from religion.
And, yes, good for the girl. What's the ACLU going to do now? Who are they going to threaten with a lawsuit?