Sounds like this chicken has a good shot at a good life. I wouldn't perform surgery on her. I am thinking taking her to the vet and letting them do it is the right way to go. That way you know it is done right and won't get an infection. I you don't want to spend the money to fix your chicken put it down quickly and as painlessly as possible. I am really sorry for your loss. Just put yourself in you chickens shoes, would you want someone to cut off your leg with no anesthesia? I don't think I would. If this was me and I had a choice I would want a doctor to knock me out and do it right or knock me out and me not to wake up again.
Goodluck,
Michelle
Goodluck,
Michelle