partially read

Mary Horlock's The Book of Lies
The story of a teenage girl in the 1980s growing up in Guernsey, who just killed her former best friend, and also her uncle's experiences during the Nazi occupation are interwoven with her diary entries--well, it sounds appealing and/or interesting, right? And it starts off really strong, but it starts bogging down about halfway through, plus the protagonist starts to get really unlikable and unsympathetic. I've been reading it for DAYS and it's only like 300 pages. I give up. I don't even care what happens in the end.