I think you have ptsd, or something similar. I believe I have the same and many on this forum do as well. Your wife seems as though she wants to try, and the fact that she hasn't taken the kids and run back to all the meetings etc, should be taken as a good sign. I think it's time to be pro active with your family. What is your beliefs, share them with your kids and wife. Don't attack her faith just point out other things that show her faith as wrong with out the frontal attack.
For example if you believe in evolution show your kids the picture of that chicken with a tooth. Then explain that scientist turned on an old dormant gene or chromosone, whatever it's called. If your a Christian then show the kids where in the Bible it's OK to celebrate holidays. Tell your wife now you feel, she seems like she cares and wants to know. Take it from me that's married to a wife that doesn't care, goes to all the meetings with my children and tells lies about me behind my back, you have hope and I think a wife that still loves you. So cheer up and happy holidays!