Good ending but Muffy was taking a huge risk...
I mean if I would was her best friend I would have killed the trick (Muffy) or at least thrown a dining room chair at her ...and if she would have made it until the end alive, I would probably never talk to them again.
**the movie does briefly address by one of her friends that she could have gotten herself killed. Still too much of a risk.
But I really did enjoy the twist overall just unrealistic. But its a movie so what should I expect.