Read the excerpt from act 2 of A Doll's House.

Helmer: [putting his papers together] Now then, little Miss Obstinate.

Nora: [breathlessly]. Torvald—what was that letter?

Helmer: Krogstad's dismissal.

Nora: Call her back, Torvald! There is still time. Oh Torvald, call her back! Do it for my sake—for your own sake—for the children's sake! Do you hear me, Torvald? Call her back! You don't know what that letter can bring upon us.

Helmer: It's too late.

Nora: Yes, it's too late.

Helmer: My dear Nora, I can forgive the anxiety you are in, although really it is an insult to me. It is, indeed. Isn't it an insult to think that I should be afraid of a starving quill-driver's vengeance? But I forgive you nevertheless, because it is such eloquent witness to your great love for me. [Takes her in his arms.] And that is as it should be, my own darling Nora. Come what will, you may be sure I shall have both courage and strength if they be needed. You will see I am man enough to take everything upon myself.

Nora: [in a horror-stricken voice]. What do you mean by that?

Helmer: Everything, I say—

Nora: [recovering herself] You will never have to do that.

Helmer: That's right. Well, we will share it, Nora, as man and wife should. That is how it shall be. [Caressing her.] Are you content now? There! There! Not these frightened dove's eyes! The whole thing is only the wildest fancy! Now, you must go and play through the Tarantella and practise with your tambourine. I shall go into the inner office and shut the door, and I shall hear nothing; you can make as much noise as you please. [Turns back at the door.] And when Rank comes, tell him where he will find me. [Nods to her, takes his papers and goes into his room, and shuts the door after him.]

Nora: [bewildered with anxiety, stands as if rooted to the spot, and whispers] He was capable of doing it. He will do it. He will do it in spite of everything. No, not that! Never, never! Anything rather than that! Oh, for some help, some way out of it! [The door-bell rings.] Doctor Rank! Anything rather than that—anything, whatever it is! [She puts her hands over her face, pulls herself together, goes to the door and opens it. RANK is standing without, hanging up his coat. During the following dialogue it begins to grow dark.]

How does the interaction between Helmer and Nora affect the plot?

Nora realizes that Helmer's actions are intended to preserve his masculinity, not their marriage.
Nora realizes that, no matter what the letter says, Helmer will still love her as much as he does now.
Nora comes to understand that Doctor Rank is more important to Helmer than she is.
Nora comes to understand that Helmer wants to share more responsibilities in the marriage now