The Crimes of Hera. Blood and Ichor, #1

Prisila wakes drenched in blood and starving for something no human should crave: hearts. Her world shatters as she learns the truth-she is not entirely mortal, but the cursed heir of Lamia, the child-eating monster damned by Hera herself. Now the gods are watching. Using her. Shaping her into a weapon for a war she never asked to fight. With every pulse of hunger and every stolen heartbeat, she slips further from the girl she was and closer to what they want her to become.
She finds an unlikely tether to her humanity in Azriel, a skilled demigod warrior bound to her by fate. But darkness calls to darkness, and Dante-a man cursed like her-draws her toward her destiny. As wrongs begin to be uncovered and Olympus demands obedience, Prisila must decide who she is: prey, predator, or something far worse. Her name is not Prisila. It's Photoulla. And the gods will learn that monsters do not bow to their creators.