My irresponsible neighbor's dog come into my property and kill 2 of my chickens and severely injured a third one. She had a big wound. I have been cleaning the wound and putting an ointment on it. I also put her on antibiotic for a couple of days. The incident happened on December 16th but my chicken has yet to fully recover. About 4 days after the incident she was walking around. She was not getting far but at least she was staying active. She refuses to join back the flock. At first, I thought she was in shock but now I am very concerned . Today she seems very lethargic. She doesn't want to eat . I have her in a cage with food and water. I covered the cage so the other girls can't bother her. I am really worry about my buff Orpington . Any recommendations ?