Anime about a girl who escapes torture? Never got to watch the anime itself but saw a short 2-minute clip on a profile on Facebook like 8 years back, and never got to follow up on it.

From what I remember:


It's about a girl who tortures people in her home. 
I remember a scene where this girl almost escapes with a knife, tries to get out the door but is cornered and gets tazed.
She jams her own head into the knife, exclaiming that she won't allow the girl to be the one to kill her. 


Pretty gruesome, I know, but I've wanted to watch it for over a year and just can't find out what it is...
It's the first season of Higurashi no Naku Koro ni.

The scene you're describing is in episode 20 (about 18 minutes in).

Shion is the one with the taser. She ends up torturing killing like half the cast.



Rika is the girl who commits suicide by banging her head against a knife.