People and a Train (Cathedral)

The Train

I wonder who the narrator is. I wonder if he was just a person in the public watching everything go on. We learn about Miss Dent, obviously a furious leady holing a gun and threatening a man for some reason. But who is this man? What did this man do to her that made her so mad? Obviously she knew the man, because she asked him many questions about a girl and what had happened. But could this man have been something close to her or close to a friend of hers? Because she seemed extremely mad. She wanted to teach him a lesson. She wanted to teach him a life long lesson about how to treat people’s feelings. She was violent. She wanted him to suffer. There were other different characters. There was the shoeless man on a hurry to catch a Train, and the Italian woman. But why are these people being talked about? I don’t understand this story. I don’t understand the point of it. We have a Train Station and a Train, so what is next? What happens? This story was meaningless to me.