Do you mean she follows Kosher? In my experience, just being 'Jewish' (before we start the "What does it mean to be 'N'?" thread again, let's limit this to "self-identified Jewish") doesn't make it a slam-dunk that there's not going to be some pork-eating going on. In fact, quite to the contrary.
I don't always understand it, but I figure it just has to do with the fact that there's one special ingredient that makes everything taste better: pig.