This book seemed long! I don't know if it was the writing style slowing it down, the characters not being developed early in the book, the timeframe switches or what...
I found the early "university" settings and storyline quite weak and very disjointed as well as unrealistic - there was just a bit too much assumed knowledge I think. As I didn't grow up in the UK or attend a UK university the scenarios seemed a bit far-fetched but that might just be my point of view.
The main character Rose was a bit weak for me - she seemed to spend a lot of her time paranoid and blaming others. I guess overall I didn't gel with the story.