The finishing point constructed by Twain is: when the old man is about to finish the story of Jim Smiley's jumping frog, another individual interrupts him. The narrator tries to leave the place, but the old man reaches it. The story ends with the old man who starts telling the narrator about a yellow cow with only one eye of Jim Smiley.
our neighbours have a cat.
The character of Sidney in "D*cky Markle" is a minor character. She is there to serve as a complement to her father, the major character. She is also there to help the plot of the story move forward.
Had Sidney not discover the World War II medal of Richard, her deceased uncle, her father would not have remembered that past wherein D*cky was still alive and the many events that unfolded after that.
Sorry but I don't know. I would help!