The Villainess on the Dover Road

A reformed fantasy villainess has been reincarnated into an English lady in the Roaring 20s. Rather than try to overthrow princesses, she and her butler Dominic spend time waylaying couples eloping to France, forcing them to spend time together and rethink their choices. Can she help people find true love, or at least stop people running away with someone they barely know? And will she find love for herself?