Maybe 3.5 stars, but only because I'm rating the book as a whole more than as the sum of its parts - otherwise it would've been 2.5 at most.

The beginning was vivid and engaging, and the ending was mostly-satisfyingly open (but verging on cliche and too feel-good, while failing to resolve certain issues that needed closure, including Imogene and Jessa's fight/friendship in general). Overall the story was interesting, and the characters were relatable if not always likable or their motives justifiable. I was rather disappointed that the only close relationships (Imogene and each of her parents, Imogene and Jessa, and to some degree Imogene and Lindy; don't even get me started on Jessa and Chad) didn't include a single dependable, healthy one - Imogene spent most of the book talking crap about everyone including herself, only to do an abrupt about-face to "oh well, nobody's perfect so I love everybody" which was at odds with both the overall tone and the themes of mental illness and tough decisions.