She already won those 4 golds at the 2016 Olympics in Rio. So that takes care of that “lifetime “ till then. This Olympics is about the last 4/5 years of hard training.
c. Her team supports her; they understand, you do not.
I doubt if her teammates are happy about her withdrawing half way through the team competition and costing them the gold.
Nobody else in the team withdrew citing “mental stress”. They were all facing some pressure. Its the Olympics dude, not a dinner party.
I’m not sure why her teammates would be upset over her quitting. It sounds like she wasn’t performing anywhere near her best anyway … so they were probably better off without her on the floor.