Frosted glass, and something behind it

Build one interactive web page: A pane of frosted glass between you and a dark room with an old television hissing static. Wipe the frost to look; it freezes back over crystal by crystal, and water runs down from what you wiped. She only moves when you cannot see her: each time the glass freezes over she is further out of the screen, until she is right behind the glass, slowly writing LET ME IN in blood with one finger, then slamming her hand against it: the glass cracks into a web, and her nails screech as her bloody hand drags down it. Then her face hits the glass, the pane caves in, the frost falls off the broken shards, and one bloodshot eye looks around through them. When the frost takes her, the glass comes back clean.

Set it on an invented business called Sampleton, with its own drawn or generated pictures and no one else's files. It suits: A Halloween event, a horror film or game launch, an escape room or a haunted attraction: anywhere a visitor has come to be scared a little. The wipe alone suits any slow reveal: a spa's steamed window, a winter product. Do not let it fail the way this kind of piece usually does: A scare that ambushes people, flashes or shakes forever. Here it says so up front, never flashes, moves only when the visitor has looked away, and with reduced motion the drips, the flicker, the slide, the shake and her eye's darting stop. Sound is off until you turn it on.

It must work with the keyboard, on a phone, with reduced motion respected and no text under 12px. Tell me which libraries you chose and why.