I have no idea why she got out. Maybe she realises it's shonky, or maybe, like me, she just couldn't hack it and so will spend future years with a guilt complex.
I have no way of finding out. Dark looks from my wife warn me that it is none of my business. We seldom talk about religion, but she knows that I have recently changed from long term drifted to educating myself in debunking WT nonsense with their own literature.
Our families are about the same age, so I will probably find out through the kids.