What was the reason why Agnes left and got married?
In the beginning of the story, Charles said "What do you suppose induced Agnes to leave us and got and get married?". Agnes, one can pressume, is the former maid, the one Edith replaced. His wife, Ruth, replied, "The reason is becoming increasingly obvious, dear."
I continued to watch hoping I would get what the obvious reason is but I still haven't figured out what. Have you?