She should use it when she is tired of waving to people. But I have not done this yet.
Hardman quotes the queen’s only daughter, Princess Anne: according to her, an artificial limb was given to Australian students. They thought that Her Majesty was tired of waving to people when she was going out, and she could do it with a false hand.
They gave her a glove filled with a dense material on a wooden lever, pulling for which she began to walk back and forth. It seems that they were afraid that it was too impertinent, but her Majesty was delighted.
Hardman believes that the queen has not yet applied an artificial hand to the public. Presumably, she took the gift to her castle in the Scottish Balmoral, where she rests every summer. According to the author, the gift of students has become a favorite toy of the royal family.