Blood heir trilogy

In the Cyrilian Empire, the gifts Affinites use to control the world are unnatural and dangerous. Anastacya Mikhailov, the crown princess, has a secret and deadly Affinity to blood; it is her curse, and the reason she has lived her life behind palace walls. When Ana's father, the emperor, is murdered, her world is shattered. Framed as his killer, Ana must flee the palace to save her life. To clear her name, she must find her father's murderer...

Anastacya Mikhailov' blood Affinity was stolen from her during the battle in Bregon, and even though every day without her Affinity brings her closer to death she is determined to return to Cyrilia and prevent the Empress Morganya from obtaining a legendary ancient power that will allow her to rule the whole world; the only allies she has left are the navy she recruited and the courage of her friends, but she is absolutely determined to liberate her...