What is wrong with you people? What is so trollish about this question? Other than inviting the wrath of the hijabi hit squad. He said he is not religious and hence married a like minded lady. Now she is becoming more inclined towards religion, and perhaps that is why he is a bit concerned.
Well dude, perhaps you could talk to her about whats going on in her head, and share whatever concerns you have with her. I don’t know maybe you guys will work something out. Well at least you will be on the same page with regards to these matters. If her reasons are convincing enough, that might also make you a part of the transition. It is always good to ask questions and learn.