The meat of my review of the original establishes that Don't Be Afraid of the Dark is:
At this point in the narrative, everyone believes Sally is merely a disturbed or troubled child, and that the monsters are figments of her troubled imagination.
Thirdly, the finale of Don't Be Afraid of the Dark sees a character dragged down into the furnace; down, down underground, into a seemingly endless (but navigable...) tunnel of dirt, clay and earth. In the original TV movie, Sally was dragged down into the furnace when nobody else was nearby...so no one saw where she went and could rescue her. She just...disappeared. Her husband might easily have believed she had left him; that she had run away.
A shame this movie doesn't have the gumption to follow through with its theme, and go in that unsettling direction.
Embellishing isn't necessarily improving, and the new Don't Be Afraid of the Dark gets so big and fat, it forgets totell a story that makes sense, or that is capable of truly disturbing our slumber.
The original 1973 telemovie did so much more with so much less.