I feed her to the beast and the beast is me by Jamison Shea

Despite being constantly overlooked in the elite and cut-throat world of the Parisian ballet, Laure will do anything to prove that a Black girl can take centre stage. To level the playing field, Laure ventures deep into the depths of the Catacombs and strikes a deal with a pulsating river of blood. The primordial power Laure gains promises influence and adoration, everything she’s dreamed of and worked toward. With retribution on her mind, she leaves a trail of broken bodies on her climb to stardom. But even as undeniable as she is, Laure is not the only monster around. And her vicious desires make her a perfect target for slaughter.