In the story "Geraldo No Last Name" by Sandra Cisneros, how would you describe Cisneros’s diction and its effect on the story’s tone?

The diction that Cisneros uses in "Geraldo No Last Name"
is casual in order to make the story feel close to home.  For example, Cisneros uses
colloquialisms to relate the reader to the experience:  "hit and run," "cumbias and
salsas and rancheras," "ain't it a shame." Yet, although the reader may relate to the
experience, the tone created by the words suggests that events like these are all too
common in communities like Marin's and Geraldo's.  The air of sarcasm in the line,
"Ain't it a shame" points to the notion that no one really does think it is a shame that
Geraldo is dead.  Using another form of diction would move the story out of the realm of
the community, and Cisneros is asking the reader to consider his/her position on events
like the one happening in the story.