After reading some of Act III, I have some things to talk about...

     Definitely the most important question is "Should have Mrs. Linde left the letter from Krogstad to Helmer in the mailbox?" This is a hard question because, while it's obvious Helmer would react poorly to the letter, how are we sure how Helmer will be later? Would Helmer ever forgive Nora for doing something so illegal, especially as a woman? For now, it seems Helmer would never forgive Nora, as, in the past, he has never tolerated borrowing money ("I even hinted that he might raise a loan. That nearly made him angry..." Henrik Isben.), and he, according to Nora, wouldn't be able to deal with the thought of owing his life to any woman ("How painful and humiliating it would be for Torvald... to know that he owed me anything!" Henrik Isben.). Although, maybe he could forgive her under plenty of conditions that would limit Nora even more, than she already had been with society's limitations for woman. Basically, it seems logical, for now, why Nora is making all these evasions and excuses to stop Helmer from reading Krogstad's note, as inevitable as it is for her husband to find out about her blunder, no matter how long she can stave it. (What a vocabulary combo!)

     Back to Krogstad and Mrs. Linde, after they put their pasts behind themselves, Mrs. Linde decided to let Helmer see the letter. Why is this? Does Mrs. Linde really think that the letter will solve all of Nora's issues, despite it being the very thing Nora wants last? It makes you wonder if Mrs. Linde was just dizzy with relief after being able to go back with Krogstad. However, if you think a bit more, Mrs. Linde might have some life experience that allows her to relate with these kind of scenarios ("I have witnessed incredible things in this house... they must have a complete understanding between them, which is impossible with all this concealment and falsehood going on." Henrik Isben.). She seems to be wise about relationships, which makes sense, since she, herself, is a widow (But not for long.).
     We stopped very abruptly, in the middle of Act III, so I can't go into much length what I think about Act III. I tried to look for something to become tumultuous with by overthinking its meaning, and purpose in the story, like Mrs. Linde's knitting supplies, but I couldn't really find anything.
(I used http://www.gutenberg.org/ as my main source for being able to read the book at home.)