Are you certain that her leg isn't broken or dislocated at the joint? I'd give her another day or two there - let her rest. That's very good to hear that the droppings are more normal. SOmetimes my hens will baby a leg for 2 days and then want to stand on it. But in such cases it's best to have them in a safe place, like she is, where they don't have to move - everything's there for them (Food, water, shelter).