- There’s a lot of mentions in the Glee portion about what things were like when they’d hang out in the earlier seasons after work and the parties they’d go to and whatnot. Kevin being a goof, Heather dancing around in her underwear, etc.

- Her part about Cory is really sweet. The two of them were really close, and she talked about what a good guy he was. They had a very brother/sister like relationship. She talked about how devastating it was to get a call in the middle of the night about him no longer being alive. But she believed that God must have had a plan, even though she didn’t understand it.

The Quarterback was really hard for everybody. Everyone was just bawling. And people were still mourning off screen, it made it really hard to do in character. Santana having a big part was sort of the writers’ way of acknowledging Naya’s friendship with Cory, and because Lea wasn’t in any place to take the lead in that episode, she was the next choice. Mike O’Malley wrote her a note telling her that he thought people on set looked up to her and that she had to try and be extra strong to help pull everyone through it.

- There’s a whole section about Mark and her awful relationship with him.

- In a segment of the book, she didn’t name Lea by name. However, there are several things pointing to her, because of things said in other parts of the book about how they were not friends and she didn’t really like her. Given her closeness to the rest of the cast, and given who was actually prominent in that episode, talking about a friend by going “… one particular Glee star to amp up her bitch factor.” doesn’t really seem likely when there’s one person that she’s named earlier on that she had a bad relationship with. She mentions how they absolutely couldn’t do the scene without this person, and the producer said it wasn’t them who spread the rumors, and she claims “it sounded like there was a giant, blinking arrow point right at a certain person. so I guess you can throw a bitch fit, lock yourself in your trailer, and stall production, yet still allegedly find the time to leak stories to the press.”

- During the episode Chris directed with the old people and the dogs, Lea was pulling a diva fit about everything and eventually was locking herself in her trailer. And Naya was ready for them to do a diner scene and she was on her mark with her lines ready and nobody else was, and one of the producers was just chilling on a diner stool and she went up to him and was like “Where’s the rest of the scene? Aren’t going to do anything about this?” and he freaked out and started yelling at her in front of everybody and was was like “I’ve been doing this job for 6 years!” And she was like “Yeah, badly.”

- She wasn’t in the next episode but they mended things during the summer hiatus that year when all the rumors were out about how she was fired. The producers told her that the rumors didn’t stem from them though, and Naya said the rumors were the first she had heard about her getting “fired.” source