Where is the wound located? Can you look all over, under wings for bite marks (puncture wounds.) Those can become infected easily. Deep wounds can heal well. I would nepot give anything for pain, in case of causing bleeding. What do you have for cleaning a wound? Betadine, chlorhexidene (Hibiclens,) Vetericyn Wound Spray, saline, or soap and water can be used to clean the wound. Use some Triple Antibiotic Ointment one the wounds after cleaning. Can she stand and walk? I would keep her separated in a crate, and away from flies. Offer her some water, and a bit of cooked egg, along with her usual chicken feed. She might be in shock for part of a day, but when she is able, get her drinking.