Abducted Heiress by Amanda Scott

Molly Gordon, the Maid of Dunsithe, would be the wealthiest woman in Scotland…if anyone could find her fortune. But spirited away by her greedy uncle, she is kept captive on a misty island, separated from her treasure and the rest of her family, perhaps forever. She longs for a hero to rescue her. But when Sir Finlay Mackenzie, the fiery warrior, gains possession of Molly, her defiance and his temper lead them into a battle of wills. Armed with the right to marry her or barter her, he finds a proud princess who resists his passion and fights his every command. Now the real adventures begin as together Molly and Fin face danger, desire, and the fate that will drive them until they can open their hearts to magic-and to love.