The sad thing is, you'll rarely convince anyone with facts, as soon as we are just ever so slightly into emotional or quasi-religious territory. Which is why an

The sad thing is, you'll rarely convince anyone with facts, as soon as we are just ever so slightly into emotional or quasi-religious territory. Which is why antivaxers, moonhoaxers, and other assorted charlatans have such an easy run at us rational folks' expense. Your best bet is probably to try scaring the shit out of her. Sorry, I didn't invent this state of the world.