How does the narrator repeating "My favorite ..." at the beginning of every paragraph contribute to the story? (My favorite things by joy cowley)

When the author does this she provides the same level of importance to all the factors that start with this phrase.

Explanation:

The reason behind this is that this is a literary device that establishes importance in the sentences that start with it. Thus, our author is letting us know that all of them have the same importance and that there is no favoritism to distinguish them. Also, the phrases or paragraphs that don't start with this phrase are outside the range of things that are her favorite,