Unfortunately her self-indulgent attitude overshadows just about everything in the book. She epitomizes what's broken with society today: "ego" trumping morals, values and principles; the prevalence of a culture where nothing is definitive and where individuals get to pick and choose the moral code that suits them; a culture that allows people to redefine just about anything that they don't feel applies to them. (Go google moral relativism if you need more info.)
So a big thumbs down on the book and I'll take a pass on the movie too.
I will, however, be spending some time with Jen Lancaster this fall.