There was a long discussion about Laura Ingalls Wilder and her life and books on a discussion board recently, and this book was mentioned. It was a great book for when I was a little sick before I got really sick (Harry Potter was perfect at that point).
This was a nice book to read because even though the author loves the Little House books, she's not fanatic about the whole thing. She did meet a few fanatics on her journey, but the book wasn't over the top at all. She generally hits the right balance between getting into the whole thing and realizing exactly what she's doing.