The Wolf and the Wildflower by Stacy Reid

USA Today bestselling author Stacy Reid's addictive tale of two lost people who are found...by each other
London is buzzing with the news that James Winters, the Duke of Wulverton-thought lost at sea a decade ago-survived in the harsh wilderness of the Yukon. Now he's been returned to his family, his responsibilities, and a nightmarish world of artifice and noise. He has three weeks to become a refined, elegant duke for the Queen...or doom the entire family to ruin and scandal.
Promising psychologist Jules Southby knows a lot about disguises. She's secretly been living as a boy since birth, enjoying the freedoms of men and knowing little about how to behave like a woman. When she meets the alluring duke, she's unprepared for his raw, masculine beauty and icy intelligence...or that he can see through her darkest secret.
Jules has very little time to transform the duke into a true semblance of an English gentleman. Yet his very presence seems to unravel her in every way. Their attraction is stark and achingly real-and forbidden. But loving the lost duke would mean losing every sacrifice she's made to earn her freedom...