Answer:
Here is my answer. Don't copy it word for word, please change up a few things.
The excerpt prepares the reader for the final line, by talking about how the family was perfect, but that their happy life was over, and how they would have to live a new, different life. This is shown in the last paragraph, when the story says, "till the pretty life in the Red Villa was over and done with, and they had to live a very different life indeed." This gives the story a more darker mood, and shows the reader that it wasn't always going to be so happy and perfect for this family. The mysterious tone allows the last line to be delivered smoothly, and leaves the reader in suspense of what awaits the family.
Explanation: