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I am talking about the cathartic scene near the end of the book when Amanda goes with Miranda to fashion week in Paris and Andrea has finally had enough and tells Miranda to F-off in front of everyone. It's such a hurrah moment and the catalyst for Andrea's transformation into Andrea: Writer with self esteem. I waited through the whole movie for that scene, it was like the payoff for having suffered through Miranda's insanity with Andy.
I also didn't like that her fellow office mate didn't warm to Andy at all in the movie like she did in the book.