The Last Vampire — Kathryn Meyer Griffith

First come the earthquakes, leaving flood and fire in their wake. Then come plague, and the endless stench of death. But in the shadows of man's destruction, an ancient evil lived on. An unnatural horror that fed on human blood, thrived on human suffering. And as the human race dwindled in the helpless few, the humans grew more desperate, ever more ruthless.

Alone in the wilderness, Emma felt the bloodthirst and knew she'd survived the end of the world only to become one of the undead. Determined to fight her unholy destiny, she struggled against the burning within. But now she was hungry. And the night was calling… THE LAST VAMPIRE