You'll need to get rid of that hide. The next time you catch her outside of it, remove it from the enclosure entirely. The sort of hide you need should be shaped like an upside-down bowl...so you can just lift it off the snake when you need to.

You can use anything from an old butter tub with an entrance (cave door) cut into the side...to fancy hides bought at a pet store. They like them tight and small...but whatever size or type of material it is made of, you need to be able to lift it off.