Hey, my gramma wasn't scary to people, just predators. But if you did happen to incur her seldom-seen Irish temper, watch out (usually it was Pappy who got it). My mom told me the willow switch was only ever actually used once, and after that, no problem The worst was being told to go cut your own switch, and if she didn't like the one you cut, she'd go cut another and use both- eeek! Thank goodness Gramma used her sense of humor (wicked) on me. Appalachian folk didn't put up with thievery (still don't) back then, and I know those folks wouldn't hesitate now, either!
When I lived in Texas I took a class on the Texas Penal Code. We went through the history a bit. If I remember correctly the way the old law was worded you could shoot them dead for stealing any livestock. Wish more stuff was like that now, we would probably have less crime.
My stepmother was a young (and hungry) girl in post WWII Italy, and has lots of stories about going out at night to rob gardens and coops. She was shot at more than once. I've always wondered if they were bad shots, or couldn't see her in the dark, or if they could see her and just wanted to scare her.