by GrannyJoanneJune 12, 2013 at 12:10 PM
Might it have something to do with the way the room is decorated (i.e. posters that could make them nervous with the light off)?
Something else you could try is having them get used to sleeping with a lamp on (not a night light, but a regular, run-of-the-mill lamp) that will make it dim but not dark.
Do you know if this has something to do with the type of movies they watch? Just a thought...
I hope you get it taken care of! Let me know if it works out!