It took me a while to get into this book, but the protagonist's narrative and exploration of her thought processes and emotions are so in-depth I ended up being really absorbed and think I will probably read the rest of the series. I think the complexity of emotion she has for her friend and the way the the author explores this means this book will stay with me for a long time - I can't think of another that explores so many nuances in a female friendship, over such a time period and underpins explicitly telling the reader with suggestions of more. Likewise, the internal self reflection was really profound and not something I come across often in books to this level - especially not combined with a good plot. The relationships were all rich in detail and felt very believable. 4.5 stars currently but had a hard time rating this so may return and bump up or down - partly because of all the reasons above I feel it could easily be a 5 star - but I suppose I don't feel like I love it and have enough affection for it to rate it a 5 at this moment. Partly because I spent about a week reading the first quarter of the book and feeling it drag rather, before then reading the rest in about 2 days. This meant though my feeling towards it changed, at this moment I spent much longer feeling frustrated with it than enjoying reading it. I will probably return to this at a later date and see if 4.5 seems fair.