My full review is here on my personal website. I'll post a few excerpts here, though:

4.5 out of 5.0 stars

The very worst thing about this book is the change in story-telling. The author chose to leave journal writing to the girls and followed a boy for the second book in the trilogy. Since boys are much less likely to keep journals or diaries, she tells the story from a third-person perspective. It doesn’t take anything away from the story, but I was really looking forward to the entire trilogy being told through journal entries.

The very best thing about this book is the realism. Pfeffer’s writing is just amazing and she brings the story to life without it seeming contrived.