You might want to apply Vaseline or other oil to her legs and feet twice a week for scaly leg mites for a few weeks. Is that a water droplet on her right leg or an injury? Her droppings seem to have a lot of grains or grit in them. Does she get grit separate from her feed? What are you feeding?
Do you have any pictures of the leg and foot? I would not let her jump up and down from the roost, but confine her to a dog crate or pen with food and water. She might have fractured a bone or sprained her leg. Splinting sometimes might help if it is fractured, but a vet xray could rule that out.
Do you have any pictures of the leg and foot? I would suspect that she has sprained or fractured her ankle. It would be best to limit her activity for a week or two, in a wire dig crate with food and water close to her. If you need to splint the ankle for support, you need to first pad it, then...