Before she retired, she wanted to do this!
Retirement is no good thing for the ones that love working, but if someone is like her, she would definitely want to get retired and do some other wonderful things in life. I am not going to explain or even discuss what she does in this video, because it is going to make you drop that jaw when you watch her perform. She had to do this before getting retired because she wanted to exist in the minds and memories of her students forever. I am sure after looking at her like this, all her students would remember her all their lives!