DELIA was sixteen when she left home to live with her lover; Heather was seventeen when she was expelled from grammar school for selling weed. So the couple expected some drama during their daughter’s teenage years. But this? It began when Siouxsie devoured Atlas Shrugged. Soon she was wearing vintage Laura Ashley dresses and listening to Christian rock. Then one shocking night, Siouxsie—after marching into their backyard art studio to extoll the benefits of trickle-down economics—landed the killer blow: ‘I’m joining the Young Liberals!’ Were Delia and Heather pearl-wearing types, they would have clutched them.