Supernatural Powers and Terrifying Children

I’d like to start out this post with the reiteration that The Innocents may possibly be the creepiest film I have ever seen, the actions of the children, all those terrifying deformed statues and the demented laughter, yikes. But one thing that I saw a somewhat subtle change with in the movie from both James novella and Oates short story that got me thinking was the addition of foreshadowing on the part of Flora, who correctly states that Miles will be coming home soon, despite the letter bearing that news not actually arriving yet. The foreshadowing adds to the bond that is already seen between the two siblings, who the Governess sees as conspiring against her, discussing that they know what she knows, but in the film, the bond seems eerier, stronger as they two present even more of a united front against the governess than what is read in the text, as it brings in an extra element of the supernatural by possibly hinting at the fact that they can communicate with one another telepathically or whatnot and that they ghosts are influencing them in more ways than just their behavior. This sort of then, to this point, shifts the focus to the ghost element, rather than just the crazy governess, but of course this could then change as the movie enters the second half.   

Also, to pose a question that has had me thinking, what is up with all the statues, and what could they possibly mean in terms of a symbol or motif that the movie is trying to get across? Any ideas?