Your mother has just gotten re- married and you have moved in with your new step-sister

Over the time you have lived together you have realised over time that she knows a lot about you, like where you go, what you eat, who you hang out with, what position you sleep in, what underwear you wear.

She doesn’t “stalk you” she just lives with you and knows more about you than you know about yourself,

One day you catch her, watching you sleeping through the window..