Kayleigh is the daughter of Sirius black. While he was in Azkaban she was raised by Remus Lupin. Now that her father is out, their relationship has become more complicated. He prefers his god son Harry Potter to his own daughter. She’s a slytherin and she believes that is why. Her jealousy over her father’s attention drives a rebellious attitude and a darkness. She becomes closer to the one boy at school that Harry hates more than anything.