Did Helen die?
In case you don't remember, Helen is the bully with giant glasses. She barely has any dialogue, but the camera focuses on her enough for her to be a memorable character.
However, it's left ambiguous if she died or not. She's last seen laughing at Carrie in her hallucination, but after that, seems to disappear. She was presumably trapped in the burning building, but in The Rage: Carrie 2, Sue states that several people survived the Black Prom, and refused to ever speak of it.
So, was Helen one of the survivors? Frankly, I'd like to believe that frumpy hoe died, but I wanna know if there's proof.