If she doesn't eat next week, you can try using an old shed or dirty bedding to re-scent her hide so that she starts using it.
Basically, one theory for why is that she may not think it smells enough like her to be her usual hide. If she eats next time, I wouldn't worry about it. She's a snake, she has her snakey reasons for doing things. If she doesn't eat, you might want to check things out a bit more.
-Jen
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