The Highlander’s Destiny by Mary Wine

Faolan McKay was the spawn of recklessness. A child conceived by moonlight outside the bonds of wedlock. His mother was banished to the rocky shores of the Highlands where she committed an even greater sin than seducing the laird’s son—she survived. And raised her son to be everything everyone whispered about him. To be feared was better than any position or sword.
Cora Mackenzie has been promised since she was five. But her intended has never even penned her a single note. Cora takes to the moors, finding satisfaction in building strength and pitting herself against the elements. She discovers a thirst for succeeding where everyone says a girl shouldn’t.
She had to be a siren.
Faolan wasn’t one for tales by the firelight, but seeing the woman perched on the rocks of his island made him stop and stare. Battered by the wind and rain, she cared nothing for her hair or dress. Instead, she stood in the face of the elements, celebrating her survival. Aye, a mythical creature, one he should ignore but just can’t seem to. Fate has locked them together, leaving him battling to resist the pull of his guest.
Whether or not she wants to know the man who saved her isn’t up to her. A storm forces them to shelter together or die if they attempt to leave. She might not survive the encounter, but it’s hardly the first time life has offered Cora no choice but to face what is placed before her.
So she’ll stand firm and let fate guide her.