Sienna grows feelings for Darren and they kiss, although Darren later reunites with Nancy after she recovers. Desperate to get rid of Nancy, Sienna frames Nancy for several dilemmas, including leaving Oscar trapped in a fire, in order to make it look like she is still addicted to painkillers. Tom catches Sienna trying to breast feed Oscar, although Sienna accuses Tom of trying to take topless pictures of her. Darren believes Sienna's lies that Nancy is still a painkiller addict, resulting in Nancy moving out and Darren and Sienna beginning a relationship. Sienna begins faking a pregnancy although is devastated when she overhears Darren saying he doesn't want the baby. In order to get Darren closer, Sienna attempts to officially get rid of Nancy and she frames Nancy for trying to kill Oscar, Charlie and herself. Nancy is taken to a mental institute because of this. Darren later finds out that Sandy Roscoe (Gillian Taylforth) is his mother and disowns Jack for lying to him for years. Darren, Sienna and Oscar move out because of this. Tom realises what Sienna has done to Nancy and attempts to expose her by putting a video camera in her bedroom. Darren finds the video camera, however, and assumes that Tom had been trying to film Sienna topless again, leaving Darren furious with Tom. Darren later makes up with Jack when he is nearly killed in an explosion.