I still haven't quite made my mind up about this book yet. I actually rather enjoyed it (although it did drag a little) up until the point where I found out (view spoiler)[that she was the one who had paid the guy to kidnap her and blackmail her dad. The whole thing fell apart then and the story just didn't hang together at all! When the Dr describes the conditions under which Stockholm syndrome can manifest, and one of the things she mentions is that Mia would have had to be very afraid of him and think he was going to kill her. I suppose she could still have been afraid because she didn't necessarily know this guy specifically, but she knew about Dalmar and the whole kidnapping wasn't a surprise to her, so that didn't make sense. 
 Also, how good an actress is this girl, to not let on the entire time that she knew about Dalmar and the whole plot to kidnap her and extort money/blackmail her father, because she was behind the whole thing?! I did actually quite like Mia and Colin's relationship though; the way they gradually begin to talk and reveal intimate details about themselves is quite sweet, in a weird way, and it did make me really feel for Mia at the climax. (hide spoiler)] 
 Overall, a decent read. Dragged a lot through the middle but an interesting ending, if you disregard the last few pages!