Personally, if China doesn't cooperate, I could see both the IOC and the IGF invalidate's China's Gold in Women Gymnastic. In terms the gold the China would have won in the gymnastic all it would amount to is being a (expensive) paperweight. And isn't that what athletes dream about? Not necessarily winning the gold medal, but that medal validating (and acknowledge by the IGF and IOC) the fact that you are the best in your sport. What's the point of winning the gold medal, if people don't recognize you as a "Gold medalist?" China will cooperate. It will print up shiny new documents for this child, showing her to be 16 years and change. They'll lie, but it's not like there's any applicable law to punish them or superior organization to show age. That'll work until she shows up for her 4th grade class.