Maiden From the Mist by Tanya Anne Crosby

Sorcha dún Scoti has known her whole life she is different. Now, the future of her clan is in doubt, and Una, their beloved seer is gone. The youngest dún Scoti inherits Una’s beloved keek stane–and with it, the gift of sight. Here, the truth of her birth and death are revealed. To save herself and her clan, Sorcha must flee the vale and travel to a remote Island in the Outer Hebrides, where she hopes to reunite with Una, but despite her gift of sight, the journey holds perils Sorcha cannot foresee… Stricken blind by his grief, Caden MacSwein has sequestered himself like a beast in his castle by the sea. It is whispered he slew his own brother, and now is cursed by the Gods. When a maiden from Inverness washes up on his shores on the eve of the summer star, Caden convinces himself Sorcha holds the key to the return of his sight. But he must ken his blindness comes from within… or he cannot save the maid from the mist from the danger, which pursues her.