EDIT: posted earlier comment, then realized you're not actually married yet. Didn't read post correctly. new reply.

(Not saying I'm Christian, but I do know some of what the bible says.)

That's sort of understandable, but sort of ridiculous. I get thinking it's not smart to marry a person whose life views basically are diametrically opposed to your own--even without the religious aspect, that relationship's got a very high chance of failure.

The only passage that directly references what she's talking about is 2 Corinthians 6:14 (Google searched it) which says something about not being bound together with unbelievers. That's sort of vague, though, and the context doesn't indicate anything about marriage.

Now, is it stupid to marry right now? Yes, I think so. You need to understand that you two have fundamentally conflicting beliefs about reality---what if she says she believes that God is commanding her to sell the houses (figuratively) and move to a third world country (with you) and feed starving children and teach them the gospel? Are you seriously perpared to consider that? What if she "feels God is leading her" to give 50% of your joint bank income to charity? What happens when she's at church every week and comes back spewing Jesus-ness all over you? Will you get annoyed with the idea that (depending on her beliefs) you might be going to hell? I think you need to evaluate the relationship and see if that is something you're willing to deal with.

That said, if you two get married, she's basically forbidden (Biblically/morally speaking) from divorcing you--I thought that's what had happened because i misread your post, so i ended up posting that that's not cool either. The Biblie, to my knowledge, and it's extensive, never teaches that marrying unbelievers is outright wrong, it just kind of implies it's really stupid, but if she's read 1 Corinthians 7:12-15ish (which deals with already married couples) those married to non-christians are basically obligated to stay with them, because jesus condmened divorce as sin outside of infidelity.