having looked at it on my laptop i think the figure is a lot further from the camera than you might at first think ...
i had thought the light coloured panel beneath the two elephants was immediately behind the girl in boots, but it isnt, see the blue t shirt kids trolley and the available floor space the other side of him ...
i also thought that same light coloured panel was pretty much against the back wall, but if you look at the small horizontal line with green below/orange above just to the left of the ghoul, thats where the floor meets the wall, so it goes back deceptively far ... the ghoul is then placed in the dark area between the two spotlights which are hitting the rear and side walls, if that makes sense, and so shes not lit in a comparable way to any of the children