This narrator is the "I" of the story, a character in the story who recounts the events from his or her perspective. Because we see everything through her eyes, we tend to identify with her more than others, even if we don't like her.
But be careful—1st-person narrators can be unreliable, even manipulative (as we find out in the Eudora Welty's short story for LitCourse 7).
