Teammates - If she had stepped down before the olympics, her teammates would be in the same position today - with the 7th best gymnast taking her spot, but unlikely to score. If she was unable to compete, then she was unable to help the team win. Stepping down and letting another gymnast step up almost certainly enhanced the teams chances.Her teammates for sure. I know the argument is gonna be "well, if she did poorly, she would have hurt them worse".
Her sponsors that invested in her
The NBC machine that put so much marketing oomph behind her.
I know the last 2 aren't exactly sympathetic figures by any means. But they invested in her and I'm pretty sure her backing out wasn't any part of their calculation.
Again....not criticizing (and I'm sympathetic to the idea of mental health being just as valid as physical health, and in this case.....they go hand in hand) but this isn't an "it only affects her" situation. People were counting on her for various reasons and she certainly "let them down".
Sponsors - I don't know who sponsors her, but none of them sponsor her during the Olympics - i.e. she Is not repping them or their gear. She is still a fabulous role model, and probably enhanced her image when this is all said and done.
NBC - seriously? We are putting the health of an athlete behind the profits of a broadcaster? Really?