Abra's parents ask her doctor "What if she starts seeing dead people, like in that movie" and the doctor replies something like "Then you will have proof of life after death"...Upon reading this I was reminded of this anecdote from an NPR interview earlier this year (though he has related this story several times over the years):
KING: "I can remember talking to the late Stanley Kubrick, who called when he was getting ready to start filming "The Shining," and whatever else you could say about him, he was a thinking cat. You know, he really thought about what he was doing. He didn't just go out there and shoot film. So he said to me, Stephen, don't you feel that anybody who tells a ghost story is basically an optimist because that presupposes the idea that we go on, that we go on into another life? And I said, well, yes, I can see that, but what about hell? And there's this long pause on the other end of the line, and then Stanley Kubrick said in this very stiff voice: I don't believe in hell."
Now I know that the movie Abra's parents are referring to is The Sixth Sense, but I could not help but thinking that this too may have been referencing Kubrick's film and his related comments.