His Moonbeam Girl. The Reluctant Unions, #1

Delivered out of slavery is only half the battle Lettice faces in forging a new life for herself in England. She must convince Kwasi he should marry her. She rattles off a list of practical reasons, and the maddening man rejects every single one! He tells her she doesn't know her own mind, that she's too young to marry. He's a hard-headed man who won't admit when he's wrong, and Lettice is not a patient woman with slowtops.
Proving him wrong leads to many clashes over the next few months, but occasionally they halt for a truce. Those sweet moments are the fuel she needs to continue campaigning this obstinate man.