Playing on the PC, I wasn't used to the inverted mouse controls, which made it tricky. The camera tracking was clunky, too - at times, I couldn't even see the character as she'd wandered off down a corridor and the camera was facing down a different corridor. Sometimes, she was walking directly towards the camera. Sort that out, though, and you have the makings of a very atmospheric game here!
The text we have to read was fine when it was in her head (although the sound effects were louder than they needed to be). When it wasn't in her head, though, it needed to pause at the end of each batch. I'd have put it in the same window as her thoughts, personally, and made the window resize to fit it.