Jacqueline Wilson on the 'easiest and hardest book I've ever written'

The much-loved author, who was made a dame in 2008, admits she has long felt a particular affection for The Illustrated Mum and it "is one of my favourite books". "It's upsetting in some ways, but I had so many letters from children saying, 'that's just like my mum or my dad'," she says. "Recently a...