[Prudence]

So the next time you can really make her look like an idiot and let her know that logical fallacies do not contribute substantially to the debate and that you would prefer she leave off the ad hominem attacks (and specifically the "abusive" subset) and confine herself to the facts.

You will have to repeat this, as you are also likely to hear in the future "you only think that way because you're a liberal/male/white/fill-in-the-blank."

And she will never ever get it because unfortunately she's been taught that you can dismiss entire categories of people whose opinions are inconvenient and that the arguments of those you don't like have, by definition, no merit. And trying to convince her otherwise will be like wrestling with a pig -- you both get dirty but the pig likes it.

However, you will demonstrate to anyone with any capacity for independent thought that you are intellectually capable and sufficiently superior that you can call her on her sh!t and move along.

And smart chicks totally dig guys who know their logical fallacies.