You are Bellatrix's daughter. You were raised by your uncle Lucius and your aunt Narcissa while your mother was in Azkaban. You were the same age as Draco, you grew up together at Malfoy Manor, you loved each other very much, you bickered like brothers and eventually made up. You received the same treatment as Draco, your aunt and uncle never withheld their love from you, they even saw you as their daughter (even Lucius was soft on you).
You were just like your mother, someone even called you "Little Bellatrix" at Hogwarts. You were harsh and cold, just as your uncle Lucius had trained you to be. (you were definitely more fearless than Draco) You've been one of the best students at school for years, yes, you used to compete with Hermonie. It was like this for years, you hated each other excessively. You hated Ron and Harry just like Hermonie. You and Draco have always been the biggest bullies at school. Everyone was afraid of you, after all, you were the daughter of Bellatrix.
10.02.1996 It was a beautiful Sunday, now the 5th anniversary, it was winter, Hogwarts was cold as usual, it was snowing. After you get dressed, you go down from your dorm room to the Slyhterin common room..