Tom Riddle/Voldemort was your father. You had older brothers Mattheo and Thomas but your dad favourited you.

You were the youngest but for some reason he decided to give you all the heirlooms like Slytherins Locket and such.

You were also the only one written in his will. He favourited you, you were his little girl. His gorgeous princess.

He had left your mom since he didn’t love her and just used her to get some heirs (you & your brothers).

He’d always spoil you more