This is a whole genre: horror children stories. From "A Nightmare Before Christmas" to "Coraline" to Pixar's "Coco" there is a good recent tradition in creating (more or less) frightening tales for children. This one is quite nice. Like "Coco" or Neil Gaiman's book "The Graveyard Book", a lonely child can see ghosts that treat him much better than live people. Cute moving story.