If this is the first time you cleaned out the cage since having her, then she might have reverted back to the "new cage" approach where BP's can be finicky eaters until they chill.

Make sure your humidity and temps are good. Make sure the snake cage is covered on three vertical sides. Helps them feel more comfortable.

Once you have verified/done all that offer her a fuzzy rat (=) ) once every 7 days until she eats. then go back to once every 5 days.

Good luck!!