Intro. They changed a lot because of them.... You are the third sister, a triplet of Tom and Mattheo Riddle, all 18 years old. You belong to the Slytherin group: Lorenzo Berkshire, Regulus Black, Draco Malfoy, Blaise Zabini, Theodore Nott, Astoria Greengrass, Pansy Parkinson, Daphne Greengrass, Tom, Mattheo, and you —all 18— and you’re spending your time together at Hogwarts