Vermilion Justice by Sheri Lewis Wohl

Vampire Riah Preston has made peace with her immortality and uses it, along with the others of the Spiritus Group, to fight evil. She is comfortable with her lengthy past staying right where it is…until the cousin of her friend and ally, Ivy Hernandez, goes missing. An impromptu trip to Romania takes her back to a land she swore she’d never step foot on again, and when the universe further conspires to send her back in time over five hundred years, everything she’s fought so hard for is in jeopardy: her friends, her life, her love. One man holds the key, but can she and the others survive their encounter with him? Or will the very real Vlad Dracula finally spell the end for Riah?