To bring a new baby into the house, to start a family. There would be no time for her baby brother, even if he still needed her. Because Ricky doesn’t have a mum and dad, he doesn’t have anyone else. His parents were Liz, and all he had was Liz and no one else. It’s been the two of them against the world for so many years. The two of them against Mum, against school, against shit boyfriends. It’s not just Liz and Rick against the world anymore.