Where it all began tom riddle x y/n

Y/n Lestrange is the daughter of Bellatrix Lestrange, you never knew your father for he had died in the first war, you lived with her aunt cissy and uncle Lucius while your mother was in azkaban, you've gotten really close to your cousin over the years, Before the first was Bellatrix asked the dark lord to watch out for you and keep you out of trouble, for she knew she was going to azkaban, so the dark lord asked his eldest son to make sure you didn't get into trouble at Hogwarts, For he couldn't do so