Thirst (Ava Delaney #1‪)‬

Part vampire, the only thing greater than Ava Delaney's thirst for human blood is her capacity for guilt. When she accidentally turns a human into her minion, she does her best to set him free - but her attempts land her in the middle of a potential vampire civil war. With the help of some new friends with ambiguous loyalties, Ava tries to save her human . . . and herself.