The Duke's Secret Cinderella - Eva Devon

Charlotte Browne could just kick herself. What on earth possessed her to tell the Duke of Rockford that she is a lady? But something about the duke's handsomeness and kind intelligence makes Charlotte blurt out the teeniest, tiniest falsehood. Now it's too late to admit she's just plain Charlotte of no particular importance—with cinder-stained hands, a wretched stepfather, and no prospects for marriage...
Rafe Dorchester, Duke of Rockford, has done what every self-respecting duke must do—avoid marriage at all costs. But the only thing stronger than the duke is his mother. When she lays down the highest ultimatum, he'll need to find a duchess. Immediately. Only, when he calls on a potential bride, he instead finds the pert, fresh-faced Lady Charlotte. Rafe was warned to never mix the business of marriage with pleasure, but when it comes to her...oh, business would be a splendid pleasure.
One passionate, illicit kiss sends Charlotte fleeing, leaving only...