My mom just rolled her ankle a couple of days ago and went to a specialist because she broke that ankle a few years ago and had all kinds of surgery on it. Specialists advice was the same as mine:
Ice for the first 2 days then heat. Wrap it in a good ace bandage tight enough for support but don't cut the circulation off. Rest it and prop it up and take ibuprofen (advil) to help with pain and inflammation. It will be a little weaker at first due to the injury so she should wear a brace while she dances or does any physical activity.
My son made this for me: