Siân Davey is a photographer with a background in fine art and social policy. Her book 'Looking for Alice', which documents the childhood of her daughter with Down Syndrome, was shortlisted for the Aperture Best Book Award at Paris Photo in 2016. Davey joins Kim Hill to discuss her book 'Martha' in 2018, which sees her turn the camera again on her adolescent stepdaughter as a response to the girl's question: 'why don't you photograph me anymore?'