Agatha is grabbing her most powerful death ray, a couple of dingbots and some of her tools and heading straight for the magi building. If they're having giant fireballs over there, then that's the best place to investigate.
And Castle Heterodyne generates it's own power, so it should still be okay. If the situation gets bad enough, Agatha may allow people to stay there a while.
Planning
And Castle Heterodyne generates it's own power, so it should still be okay. If the situation gets bad enough, Agatha may allow people to stay there a while.