"No she won't! My house got blown up, my wife and I were shot at, and we were promised a full explanation when we got here! Mon and I have had horrible nightmares about a Voldemort, Muggles, and we both were convinced that something was missing from our lives! I demand answers, Hermione!" They must have been breaking the Taboo left and right. No wonder Bellatrix knew they were in Australia.