Is it the front or back leg? It will heal on its own, but the recommended practice is to put her in a small space like a carrier stuffed with hay so she cannot jump and injure it more when it starts to heal.
Our 9 wk old dutch rabbit seems to have a broken hind leg. Not sure, but trying to find a vet who will look at him. He is eating & drinking and doesn't seem bothered by it other than not putting weight on it.