My sweet Buff Orpington has a paralyzed leg. Two weeks ago she stopped wanting to fly up to the roost so I would help her up. Last week she started wanting to sleep I the nesting box. I'd put her on the roost. She would fly to the nesting box. This past weekend she started hobbling and couldn't move her leg. Ithe other chickens started pecking her head so I have moved her in the garage. She eats great, drinks water. Her poop is normal. Her leg just isn't getting better. Is there anything I can do to help her? She is my favorite girl and I hate seeing her struggle. She will be two March 13th. She was the "mother hen" to the other 21 chickens before this happened. I know that she was vaccinated for Marek's disease. I did take in a few 4 month olds last summer that I do not know for sure if they were.