We had a great discussion of this novel yesterday at book club at my house from a mother's prospective. On one hand, we had one member who though the mother, Sara, was way overboard on protecting her sick daughter Kate. On the other hand, another member could see how one could get this protective and would give anything to cure their sick daughter. It was a good talk.
If you are looking for a good page turning summer read that you can't put down, I highly recommend this book. It would be a timely read as a movie based on the novel is coming out at the end of June. See the trailer here. I am a little disturbed by the casting (Cameron Diaz is not old enough by a good decade and Alec Baldwin is too old by two decades) and very disturbed about the rumored change in the excellent novel ending. But I still want to see the movie besides my misgiving!