what is the theme of the story- "mrs. packletide's tiger"?

Mrs. Packletide's Tiger is a satire on the sanity and vanity of human beings. It also talks about the superficial levels of cheap mentality which layers the modern society. We come to know from the story that Mrs. Packletide was a very greedy and materialistic person. She was also a mean lady who believed in sadistic pleasure. Thus, we find her arranging for a lunch the purpose of which was to make Loona Bimberton feel jealous at her success, name and fame.