If Bella is somehow stopped before she can get at Pera ...

I believe that the traditional way to do this is to tear her limb from limb. And then keep the limbs and stuff separated. Well, that presents us with both a TV Trope and a LessWrong Trope.

Interesting, but I'm getting a little tired of all the mayhem. I mean I'm all in favor of Lois McMaster Bujold's idea of how you create plots in character driven fiction - "You ask yourself 'What is the worst possible thing I could do to these people?' and then you do it." But the worst possible thing you can do to vampires and five and a half year old half-vampires is just not comparable to the worst possible thing you can do to Captain Cordelia Naismith. She escaped with just a few broken bones and the loss of her government job.