Hey Matt,

I don't want to recommend doing anyone else's method because I don't have personal experience with it. Here's something I can guarantee you, though. Snakes are very vulnerable to sudden temperature changes when they're already brumating. If you think the temp of your garage might drop by ~8-10F when the door is opened, I think you're asking for trouble. You want to find somewhere that's resistant to sudden, dramatic temperature changes. You'll also want to cover their hibernaculum, in order to provide total darkness. Then, if you find a mate, you could breed your snake in the spring. As I recall, you have a female, so you'd want to keep her down until you've already found or bought a mate. You want to have the male present before you bring her out of brumation. Hope this helps,
Rick