Elsie decided that the best thing for them to do was to kill John and run away.
Near the end of the film, it is the third day where Freddy will kill John.
But Beatrix was sure he had tried to kill John.
She refused to kill John because of how she felt about him.
Would the guard have killed John that last day if the prisoners had not saved him?
That is why he tried to kill John.
He's killed John and now he's come back to kill us.
She said in a low, shaky voice: "Have you found out any more about who killed John?"
"Right where you left it after you killed John."
The thing that killed poor John may still be hiding up there.