Mrs. Whitaker's reading material is about a woman who has a very active life, full of twists and turns. This contrasts with the general portrait of Mrs. Whitaker because her life is very peaceful and quiet.
Although you have not shown the text this question refers to, we can see from the context of the question that you are referring to "Chivalry" written by Neil Gaiman.
When reading this story, we can say that:
The arrival of the knight represents a change in Mrs. Whitaker's life and although the interaction between them is very good, Mrs. Whitaker was already happy before that.
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