That’s a shitty thing for her to do no matter what beliefs are held or whether they are correct or not.
I’m sorry you’re going through this, man. I can’t even imagine how hard it is to be on the inside and want out.
Just do what you gotta do until you’re in a position where you can free yourself. Don’t do anything you don’t want to, obviously, but I’d also try not to paint too big a target on myself at the same time. That’s my only advice.
That and don’t go too nuts once you’re on the outside. 😉 The secular world is a big place.