Answer:The writer use the literary strategy of repetition in this vignette so as to add a lot of emphasis and stress in regards to the writing and speech.
How does it help the reader to understand the narrator, Esperanza?
It is one that helps the readers to know the details about Esperanza, learn more about her role in the story as well as empathize with her.
How does Esperanza change in all of the story House on Mango Street?
Esperanza is said to have learns to narrow an identity via the use of self-awareness and art.
She was one who had learns that in order to live behind the harsh life on Mango Street she need to remove her dependence on men and struggle well through self-determination.
Therefore, The writer use the literary strategy of repetition in this vignette so as to add a lot of emphasis and stress in regards to the writing and speech.