From Unwanted to Duchess by Hanna Hamilton

“I am not your charity case, Your Grace.” “No. You are my decision.”

Frances is sent away to be a companion, not a bride. But her formidable aunt has other plans… and so does the infuriating Duke of Devonshire.
After a fire destroys his manor, James Ellery is forced to spend a fortnight under his godmother’s roof. But he doesn’t expect her stubborn, sharp-tongued niece to challenge him at every turn. Or that marrying the minx might be the answer to his biggest threat.
A marriage of convenience should be nothing more than business. It should free them both.
But being her husband is harder than he expected. Because every day beside her makes him forget why this was meant to be a bargain …and remember how much it costs to want what he swore he never would. His wife.

*If you like a realistic yet charming depiction of the Regency and Victorian era, then From Unwanted to Duchess is the novel for you.