Final answer:
The detail that refines the idea Sandra Cisneros can tell more than just her own story is in her incorporating her students' stories into her work, particularly highlighted in passage (9).
Step-by-step explanation:
The detail that most refines the idea that Sandra Cisneros embraces that she can tell more than just her story is found in (9). Cisneros expanded her writing beyond a personal memoir by incorporating the stories of her students while working in a Latino community high school.
This evolution is crucial as it speaks to her realization that her writing could channel the experiences and difficulties of others, merging her personal narrative with those belonging to a collective identity. She found that writing not just about herself but also about her students provided a form of consolation and service. These stories broadened the scope of her memoir, shaping it into a richer tapestry of shared experiences that transcend a single individual's journey.