I'm reading this at the moment on a friend's recommendation and am finding it all very interesting.
My eldest is almost 10, so I have a lot of what is discussed in the book to come, and wonder how relevant it actually is to 12, 13, 14 + year old girls.
There is definitely some queen bee behaviour among DD1 and DD2's friendsship groups and I feel I may be more prepared for various issues that may occur after reading this. It is also a bit frightening but it's reinforced my decision to leave off giving my DDs phones and FB pages as long as possible.