Serena's tour at Xavier, which couldn't find any thing wrong everything remain the same because the maid had cleaned every day. Serena had already come here 2 times.
Serena walks of Olivia's room. Which did not find any abnormalities. Everything remains the same because the maid cleaned daily. Serena Been here 2 times.
Serena explore room of Olivier, which doesn't find anything Everything remains the same because there was a maid to clean every day. Serena ever come here and 2 times.