Multiple times a day she would be yelling at my grandfather to .... and would often go out to the porch just to complain, ...

Oh, so your grandmother didn't DIRECTLY go to a lawyer, there were some (albeit awful) interactions first? Funny, it's almost as if that was exactly what I wrote.

I didn't say there aren't shitty people suing others over the dumbest things, I just pointed out one of the many holes in the story OP posted.