Shades of Scarlet by Anne Fine
When Mum gives her the notebook, Scarlet should be happy. It's beautiful, with its shiny scarlet cover and its blank pages full of promise. But Scarlet is absolutely not in the mood for a peace offering. Does Mum really think she can tear their family apart and expect Scarlet to be happy about it? And it's Dad's fault too. Why didn't he fight to keep them all together? Now Scarlet has to start a new life, and none of it was her choice. Scarlet decides there's only one thing she can write in the notebook. The truth, about everything...