Just my personal experience; but the majority are people who make stupid life decisions on the routine and think they can skip out on their bad decisions by simply avoiding everything. There's usually some sort of money amount sought, and the person at fault doesn't want to pay, so they dodge. The second largest groups are those going through divorces, and they're not stupid as much as they're just mad and don't want to fucking hear about it.
Marchi obviously falls into the first category. Starts talking shit, doesn't think she's gonna get hit, and when it comes back, she has to hide.