Reprimanding Yourself

I know a woman that frequents the town pool each week. She is the kind of person that looks around to see who is not following the rules. As soon as she spots someone, she tells the authorities. For some reason, seeing other people reprimanded gives her pleasure. Yesterday she saw people eating on the pool level. Years ago there was s strict rule that food could only be eaten at the snack bar. She called over the head lifeguard to complain. I do not understand why she did this as she and her family eat their lunch on the pool level every day. She knows the rule so why does she break it? Is breaking the rule good for her and not others? The lifeguard told her that the rule was changed this year as the snack area did not really have enough seating. I do not know why anyone would complain about a rule that they themselves are breaking. Sometimes truth is stranger than fiction.