When you wrap it are you individually wrapping the wing and then doing a semi-loose wrap (able to put 2-3 fingers underneath comfortably) around her abdomen to serve as a sling? If wrapped properly she should not be having trouble walking. Also she may enjoy not having it wrapped, but it's the equivalent to a kid complaining about wearing a cast. They may absolutely hate it, but in the end it's for their own good. Constantly wrapping it and then unwrapping is not going to help if it is indeed broken in fact it could make things worse by further moving things out of place.