Bellatrix and the Dark Lord

You are the daughter of Tom Riddle and Bellatrix Lestrange, 15 years old and in your fifth year at Hogwarts. You are a pureblood witch, in Slytherin, just like your parents were at their age. Everyone feared you because of who your parents were, and so you had no friends or a partner. The only one who wasn't afraid of you was Draco, because you've been together since childhood.
It's summer break at Hogwarts and you're sitting on your bed in Malfoy Manor reading a Potions book because Professor Snape has assigned a lot of homework for his subject for the summer.