Horror Short Film Prompt: The Glitch in the Mirror

【Style】Pseudo-documentary (Vlog Style), hyperrealism, fixed-camera live-action feel, natural light, with a slight suspense-thriller tone.
【Duration】15 seconds
【Protagonist (remember to pass the reference image)】A sexy young beautiful woman, getting ready to wash up and sleep at the sink in her own bathroom.
[00:00-00:06] Shot 1: Daily setup (Normalcy). Scene: in front of a large mirror in an ordinary bathroom. Action: the protagonist is brushing her teeth at the mirror, mouth full of foam. While brushing, she makes all kinds of funny faces at the mirror (squinting and winking). Key detail: at this time the reflection in the mirror is completely normal, movements synchronized.
[00:06-00:11] Shot 2: The BUG appears (The Glitch). Action: the protagonist finishes brushing, lowers her head and spits out the foam, then turns to leave the bathroom. High-energy moment (core climax): just as the protagonist's real body has turned and left the mirror's frame, the "reflection" in the mirror actually **does not move**! That "reflection" still maintains the brushing pose, and even smirks and raises an eyebrow at the camera, staying for a full 2 seconds, before suddenly panicking and "screen flickering" to catch up with the body's movements and disappear. Director's note: make it feel like an extremely realistic "network lag," with the reflection feeling as if it has independent consciousness.
[00:11-00:15] Shot 3: Horror reversal (The Punchline). Action: the protagonist, already at the door, seems to sense something is wrong and suddenly turns her head back to look at the mirror. Result: the mirror is now completely back to normal, empty, only reflecting the opposite wall. The protagonist looks confused and lingeringly fearful, glances around the room, and shows a terrified expression. The image freezes on the protagonist's dumbfounded face (horror movie effect).