A Rebel Heart by Beth White
Five years after the final shot was fired in the War Between the States, Selah Daughtry can barely manage to keep herself, her two younger sisters, and their spinster cousin fed and clothed. With their family's Mississippi plantation swamped by debt and the Big House falling down around them, the only option seems to be giving up their ancestral land. Pinkerton agent and former Union cavalryman Levi Riggins is investigating a series of robberies and sabotage linked to the impoverished Daughtry plantation. Posing as a hotel management agent for the railroad, he tells Selah he'll help her save her home, but only if it is converted into a hotel. With Selah otherwise engaged with renovations, Levi moves onto the property to supervise while he actually attends to his real assignment right under her nose. Selah isn't sure she entirely trusts the handsome Yankee, but she'd do almost anything to save her home. What she never expected to encounter was his assault on her heart.