She is the main character or protagonist
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It is an example of something that can be avoided through the power of memory.
Answer: I'm gonna guess simile since you didn't show us the paragraph.
Answer:
The author compares the character by comparing the fog to a cat.
Explanation:
The story says, "The fog comes on little cat feet. It sits looking over harbor and city on silent haunches and then moves on." And that shows that we can guess that the author compared it to a cat.
Hope this helped!! :D