OMG, guys. I love the book.
All that "fairytale logic" references like "oldest sister" or "third encounter shall be special" made me wish to read Propp's "Morphology of the Folk Tale" classifying all mentioned fairytale patterns. Aso it's reminding me of the Shrek, mocking classic fairytales.
In addition I can say, that the stepmother doesn't look so bad at the first glance. She gave opportunities to all her girls (yes, they used opportunities differently, than it was supposed, but still) and didn't forget to work on her own retirement. Don't you think?
Eventually I can add that I love how much the book differs from the movie. The difference makes it really worthy of reading