She Who Hunts (Demon Hunters Book 1)

Tenna Massey's past is about to catch up with her. For eighteen years she’s carefully crafted a normal life. When an assassination attempt shatters that illusion, she’s forced to accept her true identity. As the prophesied demon huntress, she may be the only one powerful enough to stop a recent string of murders.
She has two choices now: kill or be killed.
Tenna must decide if risking her own life is worth saving thousands of innocent humans and the people she loves. Will she choose to embrace her fate as The Huntress or condemn humanity to Hell on Earth?