I think what was said by the author of the book is correct: showing up and looking good is not enough for this job. This is what Mary does and she does it good. But she is not a model or a upper eastside charity lady. She is the future queen of a country. To me both her and Fred do not have the profile to be head of state. They are a nice , goodlooking couple but I doubt that they are made do represent a whole country.