Ruthless Wolf by Jasmine Wylder

Parker didn’t think things could get worse after she was murdered—she was wrong.
After she is resurrected by the Pheonix Seed, Parker is abducted by the mysterious wolf-shifter Leonidas. He is her escort to the Magical Academy of the Dark, where she will be trained to use her new powers.
Unfortunately, he isn’t the only one after her. The Dark Princes, leaders of the four houses of the Apocalypse, are after her too: War, Death, Famine, and Pestilence. If they get her, they will steal the Pheonix Seed for their own purposes, even if it means killing Parker once more.
But Parker doesn’t trust Leonidas or this incessant draw she has toward him. In this world of magic she didn’t know existed, who does she trust?
Can she get to the Academy without losing her life to the Dark Princess—or her heart to Leonidas?