Kill for Them by Ainsley Jaymes

To the three kings, it was a game. But for the chosen, it was life or death.
On the eve of the darkest day of the year, thirteen women are taken from their lives and thrust into a game of survival under the guise of becoming Queen to one of the three Kings of Shademoor.
When Amaryllis finds herself among the chosen, she has to navigate her way through shape-shifters and magic users, things she doesn’t know the first thing about, especially since she lacks the power gene. The Kings see her and they continuously seek her out, but she sees right through them.
This wasn’t about them. This was about survival. And she would do whatever it takes to survive.