The hymen is not always the best way to tell.

I had a girlfriend years ago that was not a virgin. And I was
the one that broke her hymen.

And what's the difference anyway? If you care about her you shouldn't
be concerned of what she's done in the past, it has nothing to do with you. Be happy that she is with you now and that is that. Drop these thoughts if you want things to work with her. And don't listen to stories...as they always tend to be dramatic and lack truth.