Fronteras de pasion (Border Hostage) by Virginia Henley
When Scotsman Heath Kennedy first glimpses Raven Carleton, he sees a creature whose infinite loveliness takes his breath away. But in a land divided, Raven is about to become a pawn in the bitter border wars between England and Scotland. Abducted by Heath and held for ransom, Raven finds herself attracted to him in ways she would never have imagined, while Heath is in turn utterly beguiled by his headstrong captive. When Heath breaks from his duty and offers Raven her freedom, her decision of whether to return home is no longer a simple one.