Don't. Do. It.
By taking the first step inside your wife will keep egging you on to go further. Then, should you choose to bail out, your relationship with her will worsen. As for working things out with your wife remember, it is she who owes you not you who owes her.
Don't remain ignorant of the religion. Quite the contrary, learn as much of it as you can stomach then you'll have a solid foundation upon which you can have a meaningful discussion with her. I suggest that you read Crisis of Conscience to get a good overview of what these people are really like. Also, keep reading this site.