My husband has done better out of the witness fold. He was really stressed out, tightly wound up, constantly yelling at the kids, throwing things. It was awful. I often considered leaving him because I didn't think it was a healthy environment. He followed me out of the religion and is much happier now and yells a lot less. He does more of what he wants and less of what he feels pressured to do, which has improved his happiness level and lowered his stress level. So, for him, leaving the religion has improved his personality!
Driving force, I'm really sorry it's turning out for you like this. I wish I knew what to say. She seems particularly bitter.