Overall, I really enjoyed it. Beautiful images. Nice CG throughout -- if it weren't futuristic vehicles flying around it would be (mostly) 'invisible', as it should be. The audio ambiance gives kind of an uneasy feeling which I assume is intentional. I had to put in headphones to really get the full experience.
There are a couple places the audio stumbles a little bit. A few things just sitting a little too proud in the mix compared to everything else. Also, the transition into the dream sequence after she puts the record on is a little clunky, coming back out from it is much nicer, but you've got the mans voice in there to break the fantasy so I'm not sure off hand how to improve the sound getting into the sequence but it felt a little off.
The drape, or curtain at the end of the hallway when she ventures out of the examination room felt a bit out of place to me. Like it was an afterthought to cover the light stand that's back there for backlight. It just kind of seemed like you ran out of budget and decided to live with it, when given the rest of the CG work it probably would have been pretty easy to roto her and insert a wall or something.
The shot of the exterior of the house at 10:45, the black levels don't really match so the composited city in the background just feels like a painting. it's much more convincing when they're sitting by the window playing chess.
Speaking of chess, this was the one thing that threw me, the rest I could totally live with and not give another thought. The camera crosses the line during the chess game. In the master, the black pieces are on the left in front of the man. In all of the closeups, they're on the right. So it appears as though Sara is playing the black pieces, but then again in the master at the end they're on the side away from her so it doesn't make sense for her to be playing those pieces.
There you go.. consider yourself criticized.
Seriously though, great job. Kudos to you and the entire cast/crew.