One of the most important things Kate will need to know is that the Bible disagrees with itself frequently, and that's okay. She'll get along better with some parts than others, and that's also okay. Every religion has its rough spots-- they're a standard hazard of human frailty. And she can have any opinion she wants about which bits are rough spots.

So, yeah, whether we're of one of the peoples of the book or not, we're stuck with the whole messy aggregate in our wider culture.

And it's only because some parodist bothered to read Leviticus that the homophobes who use Leviticus to justify gay-bashing now have their comeuppance in the form of the God Hates Shrimp website.