The High Stakes Saga Omnibus - Casey L Bond - Bog

Her name is Eve, and she was aptly named. The first female accepted into the Asset program, she was the first to rise to the top. She would also be the first woman to travel back in time, assigned with one target in mind: Enoch - one of the first vampires to walk the earth. Her mission was simple: Land, shove her stake through Enoch's black heart, run to safety, and jump off something really high so she could warp back home and carve out the life she's always wanted.
The only problem was that time travel was more complicated than anyone realized. She was supposed to travel back seven days, but instead, landed in the middle of England in the year 1348, during the time of the Black Plague.

Enoch never kept his true nature a secret. As a wealthy landowner, he protected and provided for the people under his care, and in exchange, they were more than willing to provide the scant amounts of blood he needed to survive. When a strange young woman showed up at his gate in the midst of the plague and then fell ill, he nursed her back to health.
He'd never met anyone like Eve. She was intelligent and witty, and the most beautiful creature he'd ever laid eyes upon. And, he learned, the most dangerous.