Kimmie quit far too early. She got hung up on judges deducting her for not completing 3 axels and 3-3s. She would have been fine if she had just eliminated those elements, IMO. The US might even have had 3 spots the last few worlds.
That's an interesting take on the matter. If you're right, it reflects one problem that can occur when someone reaches the top at a very young age. It's hard to summon up the equanimity to deal with any problems or reversals when one is in one's early or mid teens. (And not just for skaters!) I'd love to see Kimmie give things another try, because she has so many good qualities. And it's not as if the U.S. is brimming over with international medal winners. In fact, the last U.S. lady to stand on the World podium was Kimmie herself, wasn't it?