Until I lost my sister, I never knew the scale of risk that exists for young people online

If my sister Aimee and I were a Venn diagram, the internet was our intersecting centre. We grew up in Southampton and spent every summer in north Turkey, in the small coastal village Edincik, where our mum is from. While we shared the same interests – music, fashion and food – our tastes were different, and online was where they flourished.