Both of my boys have issues like that: Tigris is more or less scared by everything that happens suddenly - like turning a page of the newspaper, sneezing, lifting your hand (e.g. while you are talking and explaining things) and he is scared by bigger toys, e.g. rat size mousies etc.

He was born in a house together with his 3 siblings and was never abused.

Filou runs as soon as you approach him with the hand - you are allowed close with your nose and if it's he who jumps on ypour shoulder you can pet him.

He is born in a house and was spoilt rotten before we got him. His first human dad rather cried when it came to letting Filou go and he was allowed on the table sharing sandwiches with him

It may be that Luna simply didn't recognize the human shape when you had that stick which worried her.

One thing for sure is true: the character of cats is as different as the character of humans and some are more courageous than others