That sounds very frustrating. Is she along and separated and maybe just bored? Could she have mites or lice on her body? I am not sure that maybe adding a menthol ointment such as Vicks might be more soothing to her legs while it heals or not. I find that Vicks or menthol eases itchy skin. There also is new skin like hydrocolloid bandages at many pharmacies (CVS, etc) than can be used on wounds, that may be thicker. I think you may be able to cut them to shape. I will try and find an example. Here you go:
https://www.cvs.com/shop/cvs-health...MI6NCu64nYjAMVaUP_AR24ciy0EAQYAiABEgLzB_D_BwE
https://www.cvs.com/shop/cvs-health...MI6NCu64nYjAMVaUP_AR24ciy0EAQYAiABEgLzB_D_BwE