I hear what gman is saying. It sounds like from your thread that you are getting sucked in over and over and over again, and she goes back to the same behavior. From your words, it sounds like its very hard on you and a straightforward and loving approach with logic has not been working.

However, if she goes the church way on her own and its real, that will be benefitial for you and I'd just stay hands off while she does so or facilitate without pushing.