She should have expect the inevitable, though the reason why they build her is to counter the Royal Navy.
Pearl Harbor was the event that plunge the US into World War 2. US (or should I say, MacArthur) is already expecting some attacks (they did expecting that there would be attacks on US controlled Philippines were inevitable). But then several hours after Pearl Harbor, the Japanese begins their operation to conquer Southeast Asia.
Updated
December 8th 1941, Attack on Pearl HarbourActually, this girl knows nothing about the Pacific WarHuh!?Japan was in a war against the USA!?May 26th 1941, Bismarck sunk