Is YOUR HEART in YOUR marriage? Is your wife's HEART in your marriage? Or are you staying together for the sake of the children? Forcing your wife to walk the path is not going to resolve how you feel! In fact, if your heart is not in the relationship it is a recipe for disaster. What Théun also asked was, is your wife prepared to take your lead, and that includes your lead concerning the teachings?
Answer these questions, my friend, and then DECIDE on an appropriate course of ACTION!