You were grindelwalds daughter, once you were born you were more powerful than him so your mother had to leave with you into the muggle world u to be safe. Till you were 11 and could go to hogwarts. Till your sixth year everthing was fine you never saw him and everything was fine.

Right now you’re on the train to hogwarts, sitting with Draco, marvolo, matheo, Theodore, Blaise and pansy. You then left the compartment to go to the toilet, on the way there you met Tom riddle your new dada teacher and also marvolos and Matheos dad.