There's a part of her that suspects she's going to regret teaching Callisto how to use the lighter. It's like giving a bored toddler an open pocket knife. But for the moment, she's less annoying, so it will have to do. Donna holds out the first bottle. "Light it and chuck it as hard as you can at the ice wall out the window. But here's the deal: You manage to make a dent with the fire, we'll get some sheets and tie them together so you can climb down carefully. And back up when you get too cold or tired. If they don't, you go stomp around in the corridors for at least an hour instead of in the apartment. Go bother the neighbors."