Going along with her cult might feel fine when it is just you in her, but if you have kids, it will be very different. I married a recent convert girl в she may as well have hook up imessage to mac a nonmember в and less than a year later we got an annulment.
I remember one time I did just that with a group of friends and someone saying, "Oh you have it so rough. Honestly I'd let things keep going.
Unless you have those same understandings, I'm sad to say the relationship is almost certainly doomed.