I read this when I was a child, most likely between the ages of 10-13. I remember really liking it, as I enjoyed books told in diary format, and this book is told through recordings made on cassette tapes, which as a child I thought was the neatest idea ever.
**I'm super vague, but this could be a spoiler**
Toward the middle of the book something happens that would make most people cry, then at the end of the book something else happened that make people cry. The first thing is something I think you would be more upset by, but I was more upset by the last thing. I felt depressed, bawled like a baby and needed something to cheer me up after.
The thing that happened at the end... I forgot it was coming. How did child me handle it, I wonder?
I love that this book could still make me have such a strong emotional reaction. It held up with time, though obviously dated with usage of tapes. Everything else is still very relatable.