Just give her some time, she will heal up. You could always get her a chicken saddle, but I wouldn't know how to even catch my chickens, let alone get the stupid thing on them! It looks like maybe she was overbred, but it doesn't look like anything more serious than that. I know people always say to quarantine, but I've never really had time the time, space, or patience for that and we haven't had any issues so far. Then again, all of my adult birds except 1 came from the same breeder, and the extra roo I got was fighting with my young roo so badly through the cage that I had to let him out so they could work out their issues with more space, and it truly calmed down way faster. The others I brought in were chicks so they were in the brooder for a few weeks anyway.
