There are at least five different reasons while the light flickers and no of them is super natural.
1. Char is playing with the remote
2. the wire-ing has problems
3. the bulbs have problems
4. the bulbs aren't correctly screwed in
5. there is some interference with the wave range the bulbs are working on
She can be happy not living in India where it is normal that the electricity is fucked up. And in winter there is also fog... how spooky (at least in Punjab, can't speak for other regions). She would lose her
tit.
But if there are ghosts at work, I can understand them. This is the first time ghosts are haunted by the inhabitants, and they just want their peace back. Poor ghosts.