A friend recommended it as 'life-changing'. Wouldn't go that far, but it was interesting.
Pretty much guessed the ending very early on (which is very unlike me as I am usually blown away by even the cruddiest twist).
I wonder what the book would be like if she had children? Not saying she's not entitled to write about the subject, but I just wonder if it would be less clinical, or whether the detachment is just the narrator's survival tactic.
There was one bit that did surprise me though, and that was her reaction when she gets called to the school after the event. Not going to say too much as this isn't a spoiler thread, but I found that quite touching.