Another thing I want to say is that if indeed there are the ghosts/spirits of children who are lost somehow or in peril, what they need in living adults (who want to help) is confidence, strength and clarity. When I was a kid, if I'd died and was wandering the earth with other spirits and gasp! ...demons- I would be pretty disappointed if the first adults that come along that think I might be there are a couple of teary eyed, easily frightened types. Like, for example, when a town is flattened by a hurricane or a tornado, the mayor should not get on tv and start crying and mumbling semi-coherently. It's not because a mayor should never cry (man or not), it's because the people of the shattered town need strength and courage in the face of disaster. If a guy is married, for example, and something traumatic happens to his children, his wife and kids are going to feel a LOT better if he is strong, capable and like a rock for them all to lean on.
When the little kid was lost in another dimension on The Twilight Zone, how would he have felt if his dad just freaked out and went into the nearest closet and wept the entire night?