In "girl", what is the narrator explaining to the unknown (female) audience?

A first-person narrative is a mode of storytelling or a peripheral narrator in which a storyteller ... This device allows the audience to see the narrator's mind's eye view of the fictional universe, but it is limited to ... The telling of a story in the grammatical first person, i.e. from the perspective of "I."

Explanation:

third-person narrator who sees inside one character's mind ... McKay and the dancer may be on the porch together, telling stories and ... a description of boys in the audience, then a description of girls in the audience. ... her as her own child, and brought her up to be a happy, self-sufficient girl. ... His intentions are unknown.

the audience knows that nora is intentionally failing to dance correctly, but helmer doesnt

what does the teacher mean