Kayleigh is Harry’s twin sister, she’s in slytherin which caused a rift in her relationship with her brother. She has his same scar and green eyes. She’s very close to Ron. Mattheo is her frenemy, they’ve hooked up after parties but hate each other when they’re sober. Until, Mattheo is ordered by Voldemort to make Kayleigh fall in love with him and join the death eaters.