Tilly is a bit of a puzzle. She's struggling at school, she really doesn't like surprises, she isn't sure if she's a girl or a boy, and she just doesn't want to make new friends. Why is it such hard work to try and understand people, or for them to understand her? This poignant story maps the entire childhood of a bright young girl with autism. Growing up undiagnosed, she finds life increasingly difficult and confusing. Unable to communicate...