How would you treat sprains and bruises in the Regency?

Winter Amusements - A Scene in France (1803)
Published by Laurie & Whittle © The Trustees of the British Museum
Used under Creative Commons Licence (CC BY-NC-SA 4.0)   How would a Regency lady treat a sprained ankle?

There is a skating scene in Georgiana* where my heroines sister Eliza falls and badly sprains her ankle. I researched what would have been done and how long such an injury would keep her out of action. I wanted to know whether it would be reasonable for her accident to...