Fated to My Forbidden Vampire

Heather, a human orphan adopted by the Blake vampire family, endures constant humiliation and blame. Her sister Fiona threatens to drain her with vampire skills, demanding obedience as repayment for her parents' rescue from ruthless vampires. Theo, a billionaire CEO, is drawn to Heather through a blood oath that binds them. Though she has long been deemed unwanted, his attention makes her feel wanted. But Fiona conspires to ruin Heather's happiness. To protect her love, Heather must uncover how to break the magic spell before it destroys everything.