Why has my fear of the dark come back?

i think it has come back because you aren't feeling very secure right now. With the burglaries, and the converted maternity hospital. I would first try to get a handle on the fact that just because you are living in a place that is converted, doesn't mean that it is haunted. Secondly, the burglaries. Just make sure everything is locked at night, and keep your phone next to your bed. There are door an windown alarms that you can purchase that will give you peace of mind. There is also a master lock "door security bar" which i highly recommend. My hubby was overseas for a while, and i was alone with my children and i got a newfound "terrified feeling" of someone breaking in. I had insomnia over it until i purchased that security bar, the i slept like a baby. Its amazing how something so small can make you feel secure. Hope you find a way to over come it. :)