For the people asking for videos, most of them have been taken down on YouTube. There is still a video of her premiering You and I during this performance though.
With all the hints to wheelchairs and such, even dressed as YuYi, it makes me think that she KNEW this was going to happen, even then. It just seems like there were too many hints, even back in 09, for this not to be some kind of sign on her part.