They’re probably looking for a lawsuit and easy money too. That poor child is going to endure abuse from other kids, regardless of where the parents send them, because of their chosen lifestyle.
the kid will do just fine in a Quaker, Episcopalian, Unitarian, UCC, Lutheran, Methodist, Presby or any other number of private religious schools- among others
Attending a private religious school is a privilege, not a right
The fact that this poor girl’s mother and partner chose a Catholic school is problematic, since they would undoubtedly spend a great deal of time arguing with the school over “bias” or “bigotry”, and/or telling the child to ignore or consider wrong and bigoted the values she was taught there