tell that to Miss Wagner, who, after bombing at 2008 worlds, didn't make it again for 4 years. She was never higher than 3rd at nationals before this year. Heck, she wasn't even on the national podium in 2011!
But Nagasu has to be willing to take risks & embrace the unknown, like Wagner (and Czisny for that matter) did in turning things around. She will need to make a serious move in order to fix her problems and emerge as The Contender.