Oh I am so sorry you are dealing with this. It is SO hard to know what to do. I am certainly no expert but have had several severe injuries within my flock lately. One piece of advice I have been given regularly is that if in 2 days they are not considerably better that it may be kinder to cull them. This being said, I couldn't do it! Needless to say, I will spend my Christmas at home, not traveling, so I can individually feed my two 'special' chickens. I wish I had better advice for you. Maybe she looks uncomfortable because she is cold. Sounds like she is used to the body heat of her coop mates. Best of luck and keep us updated!!!! Is she still not eating? Poor babe.