Maya is truly one-of-a-kind. She has an extremely rare blood disorder, Hemophagocytic Lymphohistiocytosis (HLH), that causes her blood cells to attack other healthy blood cells, even striking her spleen, lungs and brain. Maya’s specific form of HLH –and the way it affects her body –is so rare that there is no other case in the world quite like hers. In 2016, she underwent a bone marrow transplant with her sister, Marley, as her donor. Maya copes with her illness by maintaining a positive attitude and always bringing her trusty sidekick, a stuffed monkey named Dave, along to her numerous hospital stays. This year she returned to school for the first time in three years.