What's still missing?

"The next day, when I went to the bookstore to copy books, I heard someone say that Xie Jun's sister had gone missing. Master Xie was so anxious that he went to report it to the police, and now everyone is looking for her. I rushed home to ask Xiao ru. Xiao ru denied it and said that I must have seen it wrong."

"No matter how I tried to move her with emotion or reason, she denied it and even cried. Her family thought that I had bullied her, so her brother pulled me out of her house. There's nothing I can do since she doesn't want to admit it. I saw that her shoes were stained with mud, and there were withered flowers on the mud, just like the ones in our Academy. I've heard from the Academy's flower manager that there's only one place in the suburbs of the capital that has flowers. On the ninth day of the Lunar New Year, I asked the manager and said that I wanted to pick some for my mother. The manager told me the way. I left the city, but I didn't find anything."