Permanent Rose by Hilary McKay

The Casson family are back in another look at this unusual family. This time we see life through young Rose's eyes. Rose has developed a terrible habit -- shoplifting. She isn't sure why she does it. Maybe to get attention. She is missing her friend Tom who has gone back to America. Her sister Saffy is searching for the identity of her biological father. Caddy and Michael are now engaged. Rose's father is now living in London with his new girlfriend. And Indigo's friend David has discovered Rose's secret. Nothing goes smoothly in the Casson household. But we wouldn't expect it to.