Does anybody know/can help me find this analog horror?

All I remember from it was a scene with a woman smiling while peeking from a door/window, her smile and eyes were edited and she was being spoken to by someone, there was loud music too, after being talked to for some time, her face started to look more normal and she had a sad expression, while the music stopped.

It seemed to be part of a series but I can't find it no matter how much I've been looking