Knightley, Erin. Prelude to a kiss series.

After her mother's death, May's sea captain father sends her halfway around the world to live with his stodgy sister in England. The summer festival in Bath made for a lovely distraction, but now she can't wait for her father's return so she can leave this country, its suffocating rules, and one infuriatingly proper nobleman in particular behind. Because he is the Duke of Radcliffe, William Spencer's whole life revolves around his duties. He never steps foot outside the bounds of proper behavior, and he expects the same of those around him. With her devil-may-care ways, May vexes him nearly as much as she tempts him, but there's something about her that he just can't resist. He knows he's falling hard for her, but with lives that are worlds apart, will they ever be able to find any common ground?