Who is Astrid Skovaard from Sharpe's Prey: Richard Sharpe and the Expedition to Copenhagen, 1807 and what is their importance?

Astrid Skovaard is Ole's daughter and Sharpe's love interest. Having recently lost her husbnd and child, Astrid volunteers in an orphange. Unlike the other people with whom Sharpe comes into contact, she is able to see the man inside the officer.