I think, the hard part for Mao would be getting that muscle memory back. With many different coaches her mind probably never got around to really "save" one version of how to do a jump. There was a lot of different input by a lot of different people and never just one version of how to do it.
The question is, if she'll be able to successfully relearn her jumps or if the many coaches actually messed up her chances.
The other question is, will she still be able to make the Worlds team? will the Japanese federation keep her scores high enough to send her if they have three clean skates at Nationals and she were to mess up? What happens when she's not selected and doesn't go to Worlds this year? I know that she might make the World team the following year without a problem, I'm more concerned about international judges (who are unbiased and of course, only judge what they see )
I've never been her biggest fan but she's got a lot of courage to do what many never even think about doing and I sincerely hope her many coaches haven't messed up her chances and her effort is rewarded in the end!! No one deserves to put so much work into something and then not see it pay of!!