This excerpt is taken from the short story “The Open Window”, written by Saki or also known as H.H. Munro. In his story he ridicules the customs of English society by using chaotic scenes.
Question: How does the author use characterization to create satire?
Answer: He uses the niece’s unexpected lies to highlight flaws in her character and those around her.
Answer:
Evidence
It is a conclusion drawn from subtext.
She stabs herself with a "happy dagger".
Answer:
I think that this means that even if you're technically in the geographically best and socially highest place in the inside you may not behave properly. So even if those that are given to you are great, if you cannot represent them, they have no reason to deserve them.
(hope that's right and helpful)