You hear a tray drop in one episode, kids screaming in another, shots being fired in another, etc...
The FBI therapist skulking around her house at night planted those books and violin to discredit her story. Prairie can't read English. She went blind when she only could read Russian, and learned braille. Her computer was in braille. At no time would she have ever learned to read English. Which explains why the books, in an Amazon box, look unread. In fact she's wanting to look Homer's name up right away before she even has net access, and is telling the first parts of her story well before any Amazon books could have arrived since it's the night after she gets internet access that she starts. Amazon is fast, but not fast enough to deliver within 12 hours and she's not fast enough to have read them in that time anyway.
The text written in braille on the wall in FBI Counselor's office says Rachel by the way (I did not figure this out, it came from an article).
Also interesting note. Rachel takks about her NDE in a car accident and describes a red backpack in the road. The scene where Buck passes the flares in the road, as if there had been a car accident, there is a red backpack
Finally, what the heck was up with that audio Homer listened to in Hap’s office? A man’s voice says, “Your name is not Homer.” Another voice says, “Do you know Dr. Roberts?” And Homer's last name is Roberts. WTF?