It doesn't help now, but since in my house it drops down to much colder during power outages, I have a "power outage kit". I keep those handwarmers you just shake or open to activate and an empty plastic tub. If the power went out, I would place the handwarmers underneath the plastic tub (not inside, I wouldn't risk my snake getting to the handwarmer directly). I would wrap the handwarmers in towels first, because they get too hot to be directly under your reptile. I would put it on one side of the tub so that she can choose to stay over it or not. I'd place another towel inside the tub so that she could bury in it or sit on top of it. I keep a temp gun and a little digital thermometer at hand too, and monitor the temperatures. I don't let it get as hot as her cage's basking spot because they aren't very steady and can get hotter without you noticing. If it's too warm, add more towels between the handwarmer and the tub. They stay warm for hours though, so it's enough to get you to the next morning.