The Firebrand by T.M. Smith

Rein, a Vampire mixed breed, plunged into the abyss of bludfrenzy. With icy resolve, he crawled out to become a Firebrand. He doesn’t make rash decisions.
Until…
Braelyn takes a shortcut through an alley musing about what she can’t have. A new job. Adventure. A cancer-free brain. Instead, she writes for a paranormal tabloid. No, she doesn’t believe such nonsense, but she’s heading to Cleveland on assignment. Oh, and her tumor is back.
Then…
Rein kidnaps her and takes her to his realm, igniting a fiery romance.
Meanwhile…
An ancient threat hunts for descendants of the Blood Coven who divided the world into three realms fifteen hundred years ago to protect humans from savage Aeternals. Then, they scattered across Earth, marrying, raising children, dying, burying their secrets in time. Generations grew, unaware of their legacy.
But…
Braelyn is squarely in the hunter’s sights, and Rein is her best chance to survive.