Yeah, work the leg, it's numb and damaged. Try to increase blood flow and force it back into the normal position. It may hurt her, but it should help. Chicken physical therapy!
I had a young chick fall and get stuck upside down behind a nest box in scorching heat. He was dehydrated, disoriented, and dumb when I found him, but he was alive and he quickly recovered. He couldn't walk at first, but he got better. Think of it this way, when you let your foot fall asleep for a long time, it takes a long while to regain feeling. Now cut the circulation off your foot for a whole day and see how it feels.
Best of luck, I hope she gets better! Try some vitamins and minerals too!