If this is the plan of the hotel, how did no one notice Barbra before Bill did? There is a trail of blood on the floor leading to the closet, there is vomit on the floor nearby and the most obvious thing is, the broken trophy laying there for someone to trip over. In little Billie's interview she heard all the commotion at night with Barbra and, somebody, then touched the trophy and saw Barbra in the closet. When people were looking to find Barbra in the morning, they would have been walking straight past all this?? Example : Susan went to knock on Mary's door, there's only one way to walk to Mary's room from where Barbra's room is. Past the closet - Then to go and knock on other doors to find Barbra I guess they would have come back past the murder scene again, because most of the guest's rooms were near Barbra's room. ( But there are em. exits they could have used to by-pass the closet?? Why would they do that?? Maybe they thought Barbra could be hiding there?? )