Bold Surrender by Judith E. French (The Triumphant Hearts Series)

Ashley Morgan was a woman who was more suited to the west for that time period. But her grandfather raised to run the plantation and so she decided she would never give up control. Along comes Kelt Saxon to become overseer, because Ashley can't get sea captains to deal with a woman. As Kelt and Ashley get to know each other through working together and their misadventures, love develops. This story takes you on some heartrending  and truth revealing adventures. The story is compelling and I stayed to the end.