Do you have any idea where she is getting this bad man idea? Would something as simple as monster spray or even a really big stuffed dog...or do you have a real dog? Something to be her protector? I was thinking maybe get a stuffed animal dog that looked real...like a big collie looking thing...that you could tell her watched over her and kept her safe. That is if you dont have a real dog that would sleep with her. My kids always had real dogs...lol.
They also say you can use scented water as monster spray if that is the problem.
I dont know...just throwing out ideas.