If you’ve been intimate, there has been chemical bonding in your relationship that is blurring your vision. Sex makes you attached, and at this point in your relationship you need to be unattached enough to see red flags and discern whether this is the person you want to marry. You are too attached and are adamantly trying to make the relationship work when it won’t work. The answer is to walk away, but you won’t because you’re bonded.It’s not for sex as we do not have sex anymore (I shared I wanted to be chaste even though our relationship had been extremely sexual for the most of it)
I realize I’ve been blunt. But I think you need to hear it. I also echo everyone who says she is manipulative. Religion put aside, blaming you for “not explaining the Faith to her enough” is wrong. It’s well within her power to research and study the Faith. The responsibility for educating her about it does not fall exclusively on your shoulders. Will she similarly blame you for other things that go wrong in your marriage? The red flags aren’t limited to religion. The best thing to do is walk away.