I really liked the book. Fantastic insight into the girls' mind and world. Sometimes I had a feeling that it's about me, my adolescence and youth. Of course I don't mean the parts about the cult, killings and drugs. I just mean that the world of a teenaged girl is described perfectly accurate.
The book also provides some internal logic to that violent killings made by the girls from the Manson family (The Tate murders) . Actually, I found out that the plot is partially based on that famous crime only after I'd finished reading and was browsing through some reviews on the Internet.