After she squirms out of the bed, the rooms closes in on itself. After that, the entire house closes in on itself. I don't know where in the movie this is going to take place, but this scene has already been filmed. As a matter of fact, it was one of the first scenes filmed. It was a media preview set up by Dreamworks.
Film is still in production.
The sets are very impressive. Very detailed and several stories high. There is a greenhouse with stairs and a catwalk. A second catwalk is connected to a pair of inter-twining stairs that appeared to have come crashing down in some scene already filmed. They were wrapped in yellow crime scene type tape.