Intel, Please reread your answer to my question: How does she act when she doesn't get her own way? This manipulative behavior on her part speaks volumes. Willful people tend to seek partners they know will give in to preserve the peace. This selfish personality trait has nothing to do with religion. Even if she leaves the Borg for good, you will still be living a life walking on eggshells. Is THAT what you want 10, 20, years from now?
It is good to be a peacemaker up to a point, but NOT at the expence of loosing yourself. You must learn to respect yourself more. Therapy might be money well spent. To be part of a successful relationship you must be whole within yourself. You must be able to bring something to the "table". Your hopes, dreams, interests, should never have to be tossed simply to satisfy your partner.
I hope you carefully consider these things. I was married 30 years to someone sefish. I have been married 12 years to someone who is not. Freedom to be your self is priceless.