My sister lives on the mantelpiece

"My sister lives on the mantelpiece" or "Mi hermana vive sobre la repisa de la chimenea" is a novel written by Anabel Pitcher and published in 2011.
Some months ago, our teacher asked us to read this book and today we have had an exam about that, so now, I'll make a summary and I'll make a book review.
James Matthews or Jamie is a ten year old boy who lives with his dad and his elder sister, Jasmine. Jasmine's twin sister was killed in a terrorist attack in Trafalgar Square 5 years ago and Jamie's family has never come to terms with her death. In fact, their parents are separed because his mum had an affair and his dad turned to drink.
Then, after they get divorced, his father moves them to the countryside for a "fresh new start", but when he places Rose's ashes on the mantelpiece Jamie and Jas realize that the past will continue haunting them wherever they go.
In his new school, Jamie meets Sunya, a musulman girl, but the problem is that his father hates musulmans because he thinks that they are responsable of what happened to Rose.
I'm gonna be honest. I didn't enjoy the book, it was so boring! I love reading, but I read this book just because it was required. When I started reading this book, I thought it was so fun to see everyhing  from the point of view of a child, then, I expected for something to happen, an epic outcome, and I waited and waited...and I ended the book! Nothing happened! The most interesting thing that happened was the death of his cat Roger.
Maybe is because I prefer action or adventure novels, but this book really disappointed me.