My Sister's KeeperAnna is not sick, but she might as well be. By age thirteen, she has undergone countless surgeries, transfusions, and shots so that her older sister, Kate, can somehow fight the leukaemia that has plagued her since childhood. Anna was conceived as a bone marrow match for Kate, a life and a role that she has never questioned until now. Like most teenagers, Anna is beginning to question who she truly is. But unlike most teenagers, she has always been