Poor girl. I hate rabbit cages. I never pit my chickens on wire. Clean the girl up a bit lol.. Maybe not put her in rabbit cage. It could be the problem.
I used to think putting them on wire was bad, then I discovered that left to their own devices they will spend as much time on wire as on the ground or bedding. I've found that it is usually easier to keep their feet in condition if they are on wire, and since it doesn't seem to bother them...