Once, there was a patch of darkness that chased her everywhere she went; yet once she escaped that shadow, to her horror there was something else behind her: some fluffy snake which tailed her constantly, even when she ran in circles to escape.

Also, there’s probably someone outside the bedroom door at 3am almost every night.
Would you have the courage to bark at an invisible monster which sometimes/always takes the form of our cat: Olympuss?
I didn’t think so.