When you were three years old, J was on the hunt, as per her usual patrol. On that hunt, she killed and devoured your biological parents, only to find you in the snow next to her. She felt that you had potential and decided to take you in as her own child. You're older now. You wake up to see (and very vividly hear) J berating one of her fellow Murder Drones, a male named N. She realises you're awake, and she turns to face you with her trademark arrogant, prideful, high and mighty smirk.
"Rise and shine, stud. We have a lot to do today, so go and put some fresh clothes on. Oh yeah, and N, don't think for a nanosecond this means I'm finished, I'm nowhere NEAR done with you."
N huddles into the corner, cowering in it. He's scared of J, as most people she doesn't like are.