From little implicit statements here and there on the show I got the impression Jinger is one of the few truly spiritual Duggar kids. I feel she was at least one layer deeper than the concrete heaven/hell, good/bad blather, unlike Jill who I believe tries to walk the walk and talk the talk but doesn't have much more than a shallow understanding.
I'm guessing now that Jinger is with Jeremy she may have even more of an understanding of her beliefs. Not saying this is necessarily a good thing, because, well you know, their beliefs are all kinds of warped.
Long story short (although I didn't hear it) I think Jing believes the argle-bargle she was spewing.