Brentwood's Ward (The Bow Street Runners, #1)

Place an unpolished lawman named Nicholas Brentwood as guardian over a spoiled, pompous beauty named Emily Payne and what do you get? More trouble than Brentwood bargains for. She is determined to find a husband this season. He just wants the large fee her father will pay him to help his ailing sister. After a series of dire mishaps, both their desires are thwarted, but each discovers that no matter what, God is in charge.