LONDON—Sources close to the British royal family confirmed Tuesday that relatives of Queen Elizabeth II have privately expressed feelings of uneasiness ever since an incident last week in which the 83-year-old sovereign ordered guards to decapitate seven tourists having their picture taken outside Buckingham Palace. "She just doesn't seem herself lately," Charles, Prince of Wales, is reported to have said. "Wandering around the palace at all hours of the night, turning lights on and off, trying to disband Parliament, putting aluminum foil in the microwave. It's all a bit troubling." Despite an accident late last week, during which Elizabeth II called for all of England to fight off the Normans, family members claimed that she is doing remarkably well for her age.