Scared of the dark

My 5 year old is scared of the dark. A nightlight isn't enough. Oh no no. Like she wants every light on. Always been like this. She's not had a traumatic nightmare or anything to my knowledge. We've tried literally everything. Monster spray, dream catchers, books, talking about it in depth, praying, toys, the dogs sleep with her, etc and just no. It's a meltdown if every light in her room isn't on at night. My oldest wasn't like this and they'll be sharing a room starting in July and he can't sleep with the light on. Anyone got suggestions? Child therapists are few and far between here and months out (late Sept.) Help!!