So my S.O. just informed me she may be joining a fundy church

[Zoomie1986]

46. Except that's not how it works in reality

It's brainwashing, and it was done deliberately. For several hours at a time, she had no choice about being in close quarters with people who have the agenda of converting everyone they meet to their cult, and they are relentless about it.

Same thing with all of those people brainwashed into right-wing extremism from listening to talk-radio and watching Fox. This is a good outline of how easily and insidiously it happens:

The right wing borrowed these techniques from religion. Because they work to create unquestioning followers, far too often.