Since you're so knowledgeable, what do I say when she snidely responds that the Weapons of Mass destruction that weren't found were really just part of Bush's evil plan. I'm telling you this chick is way out there.
You're dealing with a hopeless case. Pearls before swine. You know the gig. If you can't bring yourself to drop her, anytime she tries to sell you on her world view, tell her to talk to the hand.