Nell and the Runaway Duke by Sofie Darling

Nell never dreamed she’d have a holiday romance…
Miss Nell Tait is nobody’s fool—at least not now. In her youth, a man had taken advantage of her and changed her whole life. Now she’s left the East End behind and is a successful modiste to the ton—and will never fall for another man’s lies.

And certainly not with an eligible Duke masquerading as a valet…
His Grace Lucas Kendall, the Duke of Amherst, hadn’t meant to lie to Nell. But he couldn’t miss the chance to know the smart, spirited woman who laughs at mishaps and asks after his injured horse. The woman who doesn’t know he’s a peer.

But anything can happen when it comes to true love…
When Nell learns the man she is falling for is a duke, she knows her dreams will never come true. But Lucas knows two things that Nell doesn’t. Despite his deception, she knows him better than anyone else—and dukes can do anything they like…