Cisneros writes this chapter as a back-and-forth response,like point/counterpoint in music. Why does she choose this narrative technique for this chapter?

Nenny's refusal to stop naming the clouds as the other three match wits maintains a level of friendliness, and the fight is ended when the clouds provide the answer to the retort "Who's stupid? Rachel, Lucy, Esperanza, and Nenny. Indeed, in this chapter the plethora of clouds are a metaphor for the girls' own erratic behavior, as their attitudes and moods are always changing. This is why the author fragments the narrative. She wants to juxtapose the points to represent the girls' new feelings and emotions.