Wow! This is so heartbreaking and universal. Even though she prayed that desperate prayer thousands of miles and decades away from my own young self, I once prayed something very similar, and not just one time.
The evils of Christian rejection of queer people are global! The pain is global!
You mentioned your high school was a Christian missionary school, and I suppose it was probably supported at least in part by American Christians.
And for that, despite the fact there's nothing I could have done about it, I am, as an American, very sorry!