I don't mean Kimmie is particularly mentally stronger than Alissa. When Kimmie competed last year, she was not performing to get the spot of Olympic team, and Alissa or Emily were not that close to where Kimmie was, so Kimmie did fairly well. This year Jenny retired, the third spot is just between two or three girls to fight for, Alissa did very well at GP, so who can take the pressure well, or mentally strong at nationals, who will go to Olympic. People's mind also affect by each day's life. The girl who has the best mind set that day will win.