It could well be that she withdrew because she knew she was doing badly, and didn't want to hurt the team's chances. They did replace her with another girl. So much for team competition.
But in a few days comes the premier event of the Olympics, women's individual competition. Nadia Comenichi. Mary Lou Retton. It is the chance for a girl to become very famous, and to get rich with a Wheaties contract etc. It will be interesting to see if Simone competes. At any rate she has been a fantastic athlete for years and was, last year at the top of her game. The flips and spins those girls do are unbelievable.