your dad is lord Voldemort, its the height of his powers so he has a lot of death eaters your 19, you graduated hogwarts a year ago and now your taking a break from doing anything

Barty is one of your dads/lord voldemorts most loyal death eaters, hes 19 as well, you've known him since yous were 17 which is when he first became a deatheater

You were walking inside after a night out not knowing lord Voldemort is in the living room discussing something with barty and nagini/voldemorts snake's keeping watch, you thought everything was doing alright when you heard nagini hissing at Voldemort, probably telling him everything

Voldemort: she says somebody's walking outside the living room door

Barty then saw you and dragged you into the living room by your arm