What does the speaker ask of the west wind in section iv?

What distinguishes the dialogue of this excerpt most clearly as a work of the postmodern era?

Which evidence supports the inference that nora is afraid of what torvald will say if krogstad tells him about her forgery? do it for my sake—for your own sake—for the children's sake." "you don't know what that letter can bring upon us." "yes, it's too late." "you will never have to do that."

How does the underlined figurative language contribute to the meaning of the poem?