How have Mr. Krogstad's plans changed in Act II?

Krogstad now decides that he will not make the matter public after all, but he will keep it between Nora, himself, and Torvald. Nora protests that Torvald must not know, but Krogstad replies that, even if she did have the money to pay the outstanding balance on the loan, he would still involve Torvald, for his intention is not to expose Nora but to blackmail Torvald.