She has stopped eating, and I can't find the tendon that might be misplaced.
Have you given her aspirin for pain relief/swelling,if not do so,when in pain they will not eat,i would also add electrolytes in her water(electrolytes help with shock/stress). Did you look at site i posted regarding slipped tendons? Leave her for now,tomorrow try the methods that were suggested on site. If you have a hot water bottle,fill it and place in a pillow case,set beside her. When chickens are not feeling well they become chilled,hot water bottles are great for this. Make sure she is drinking.