I meant in 2011. Which she didn't. Worlds was her only competition that year.
She got bye because she was then the reigning worlds medalist.
2006- She went to nationals and was champ. -> Became 2007 worlds bronze medalist
2007- She got bye as a reigning medalist. -> Became 2008 worlds bronze medalist
2008- She got bye as a reigning medalist. -> Became 2009 worlds gold medalist
2009- She got bye as a reigning medalist. -> Became 2010 worlds silver medalist
2010- She got bye as a reigning medalist. -> Became 2011 worlds silver medalist
2011- She didn't compete
2012- She went to national 'coz she didn't get bye, then won. -> Became 2013 world gold medalist.
Nothing wrong and nobody was robbed of anything. Everything was done fair and square.
By the way, here in this forum there are a couple of thread about who can possibly win Yuna on world level. And only Mao and Caro are mentioned and even them many say it's not possible. So, in Korea, who is there to possibly win over Yuna and was robbed of a ticket to the Worlds??? Mao and Caro should watch out!!