She made millions as a tween and teenager by posting clips of herself and her friends on YouTube. Then the business collapsed amid acrimony. What does her success in the adult industry, at 18, say about surveillance, social media and sexualisation? If you have something to share about this story, you can contact Amelia using one of the following methods: The Guardian app has a tool to send tips about stories. Messages are end to end encrypted and concealed within the routine activity that every