Hang in there. This too shall pass. Plus, you do love you too much to hurt you right? Btw, your daughter is a huge part of you too.
It is so sad how they divide the families all in the name of labeling someone as being spiritually strong or weak. You are way stronger than that. You were strong enough to learn the truth about them. Your freedom is a huge win. You just have to ask yourself what is needed to make this a win/win. You might be surprised what you come up with once you take a step back and regroup.
Another poster suggested you not make a major decision when you are emotional. Great advice. If your wife can't see that you are a good provider, awesome father, and you've been loviing her in abundance just to stay with a raging lunatic, than...................
Lovingly be assertive and do take the lead and don't let go. You could let her know that it's easy to judge until you are in that person's shoes. The wtbt$ follows a one size fits all mantra that is completely unrealistic. Remind her that you live in the real world and that you haven't found any company that will accept watchtowers or awakes in lieu of cash.
I'm not sure if you still believe in GOD, but all things are possible through Christ.
Be well and keep a healthy mind.