Jemima J. Not Worth the Time to Read It

I picked up this book used for just a few dollars, and thought it had a pretty good premise with some potential. This is the second book I've read by Jane Green. The first (Bookends) wasn't great, but not so bad I swore her off completely. This, however, was one of the worst books I think I've ever read.
***Warning, this will contain minor spoilers.***
What I liked (short list): I liked the narration for the most part. I liked that it went between Jemima's first person and third person. I liked the voice of the third person and that it addressed the audience directly.
What I did not like:
Jemima was probably the most self-concerned, superficial, obnoxious character I've ever read about. She talks about how she's a good person, but no one sees it because she's overweight. I don't see her being a good person at all. I see her trying not to eat so much, but this isn't really helping anyone else. Once she does lose the weight, she still judges other people by their weight and is more judgmental than she blames others for being.
I hate that all of her relationships are based solely on her being thin. I understood that she lost weight for Brad. But the fact that Ben only really notices her when she's lost weight does not make me like their relationship either.
There were too many parts that were super repetitive. There was a lot of telling instead of showing. I think this was why I liked when it switched back to the third person narrator. I was so annoyed by Jemima.
This was incredibly insensitive to anyone overweight and the only time Jemima is even portrayed as being healthy is in the epilogue. We are told she's healthy, but really we don't see this. She is either "way" over weight or anorexic. As another reviewer said, I pictured her as 5'2 and 300+ pounds, not 5'7 and 200. While that is still overweight, it's not by 100 lbs (as the back of the book says). And it's doubtful she would have 3 chins, even in a picture. I don't think Ms. Green has much experience with this topic.

I don't think I'd recommend this book to anyone. I was hoping for a strong heroine, but instead lost respect for and interest in Jemima J. the more I read about her. I will give Ms. Green one more book to change my mind, but it may be a while before I can be ready for another disaster like this one.