The Dormant Blood Ignites

An orphaned hunter slipped into an ancient castle and woke a primordial vampire. He bound her with a blood thrall contract. She uncovered the truth: the Hunter's Guild was built on lies, her boyfriend had used her as bait, and the Guild Master had murdered her parents. When he tore out his own heart to protect her, her dormant blood ignited. She killed the traitors, rebuilt his heart, and rose as a half-vampire queen, bending him to her will.