I'm just going to start off by saying that this book is terrible. In pretty much every way. But it's the kind of terrible where, after a hard week of challenging reading (and, you know, actual work), you can just sort of shut down your brain and skim through it.
Like everyone else, I was sucked in by the premise of spoiled rich girl turned good after losing her memory. But it was all so trite and pat and perfectly pointless. The characters where one dimensional, and though they changed, they never gained depth. They just went from one dimensionally awful to one dimensionally good. Except for the requisite Magical Negroes, Carol the homeless guru, and Beatriz, the technically Mexican housekeeper. Between the two of them it takes about 2 weeks to transform Sia from queen of the bitches to queen of the fundraisers, but not one word of it was believable.
I got it on special from Amazon for less than a dollar, but I still returned it. My day, however, I will never get back.