Keeper of Stars by Krista Street

My worst nightmare has arrived.

I’ve fallen prey to the enemy who’s been after me since my birth. He forces me to bend to his will and I become trapped, changed, and made to embody the monster everyone’s always whispered I could be.
Under his vengeful commands, the kingdom succumbs to my horrific magic, and our fae suffer, but Kole senses that something is awry and seems determined to understand my silent torture.
But meddling will only lead to his death, so I push Kole away to keep him safe from my lethal magic, because if I lose him on top of everything else that has been taken from me, my heart will shatter.
Yet the warrior refuses to submit, meaning his doom and my kingdom’s ruin will follow if I can’t find a way to break free.