Actually happened or fantasy?
I just watched the film, and in my mind at the time everything that we saw happened. The fantasy aspects involved Jeliza-Rose and the doll's heads (so when she imagined them in her dad's stomach etc) or when she pretends that she's swimming (so the house rocks back and forward like a boat and fills up with water).
However, in the summary on here, the author has said "With Noah passed out, the girl mentally transfers to a fantasy worlds she and her doll heads enter magically. In its adventures she also stars the crazy locals, notably Dell, her domineering hag ma and adult, but retarded brother Dickens."
This would imply to me that everything up until the train crash was fantasy, that she imagined Dell and Dickens. People will point to the fact that she saw Dell at the crash, but this could have been a figment of her imagination, just like when she thought she heard and saw Dickens there as well.
As Dell was such an overblown, unrealistic character, this is probably more plausible, but we never received any indication that she had full transformed into this completely fantasy world if this is the case.
So what are the views of everyone else?