You need to get a thermostat. It'll turn the lamp on & off as needed to keep the temperature steady. They're a requirement for a heat lamp set up unless you're around 24/7 to be able to keep an eye on the temperature and control the lamp.
You also need to get a different bulb. A red light bulb is not good - the light bothers almost all hedgehogs and can prevent them from coming out as much as they normally would at night. They do see the light & it can throw their schedule off quite a bit. You need to get a ceramic heat emitter bulb. They don't give any light off, just heat. I would get a 100-watt one, along with a thermostat. Together, they should do a much better job at keeping your hedgehog's cage temperature steady & at a safe temp, and she'll be on a more normal light schedule as well, with no night-time light.
She'll probably eat tonight, and if she doesn't, I would prepare to syringe feed her tomorrow, just in case. It's normal for them to be a little off after a hibernation attempt though. Just keep her warm and keep an eye on her for tonight. Try to get the new heating supplies as soon as you can - tomorrow or within the next few days. You can get them from pet stores or online. Online is typically cheaper, but you'll have to wait for them to ship too.
~*~*~ Kelsey ~*~*~
RIP my sweet Lily ~ 6/12/08 - 1/20/12