Now I Rise by Kiersten White
Lada Dracul has no allies. No crown. All she has is what she’s always had: herself. After failing to secure the Wallachian throne, Lada is out to punish anyone who dares cross her. She storms the countryside with her men, but brute force isn’t getting Lada what she wants. And thinking of Mehmed, the defiant Ottoman sultan, brings little comfort to her thorny heart. There’s no time to wonder whether he still thinks about her, even loves her. She left him before he could leave her.