Answer: No, I don't blame Macduff.
Explanation: Once Macbeth has been defeated, order will be recovered and Scotland's people will be safe. One cannot consequently blame him wholly for abandoning his family. The question becomes apparent though, was Macduff foolish or inocent to believe that Macbeth would not stoop so low as to damage his family? ... Lady Macduff can't be forgiven.
