Across Shadowed Paths by Anna Hawke

Three days. Two people. One cabin. A mating bond triggered by a vampire’s bite.

Blair escaped the horrors of her past, but they never stopped haunting her. Driven by the need for revenge, she ventures into the heart of enemy territory. When she’s exposed as a vampire, being rescued strands her in the wilderness with her best friend’s brother.
Living in the shadow of his sister, Kaien fears he can claim nothing to his own merit. When he saves Blair’s life, he’s stripped of his abilities and trapped in a mating bond with a woman who refuses him. Thousands of miles away from his clan, he must battle against the need to claim her as his fated mate—and the one thing that could solely be his.
Away from civilization, the masks they wear crumble, and the scorching desire between them ignites. Sheltering together in a remote cabin, Blair and Kaien must survive the elements—and each other.