Everyone has pretty much said it, but the idea of it bothers me so much I can't help from responding as well.

First of all, don't take your family to those type of situations.

Second, in WA fear of bodily harm is enough legal justification, and even if it wasn't, I wouldn't care. No one rapes my family while I am around unless I am dead first. And that means I didn't draw fast/soon enough, or ran out of ammo with at least a few of them left (unlikely).