Seductive Persuasion — Frances Stockton

As an Elder of a diminishing race, Garrick Forrester has lived through wars, plagues and two arranged marriages. But nothing he's experienced has prepared him for the discovery of his mate or for her resistance. To keep Aisley Reeves safe from an unimaginable enemy, he must persuade her to become his willing countess, while keeping her under constant guard.

Imagine Aisley's dismay when the Earl of Danford demands she become his betrothed by the close of a fortnight. Already fearful her work as a healer and her birthmark might tempt some to brand her as a witch, she believes it is best to keep her distance from the dark, mesmerizing earl whose thoughts she can hear and who reminds her of a black leopard patrolling the forest. However, when Garrick's gifts become her only hope for survival, she must decide if she can trust her heart to a man who is far more than human.