Question: What is the name of the lead character in a novel about an 18 year old with severe combined immunodeficiency, confined to her home; written by Jamaican-American author Nicola Yoon? 
Sentence (from "Nicola Yoon"): She is best known for writing the 2015 young adult novel "Everything, Everything", a "New York Times" best seller and the basis of a 2017 film of the same name.
Relevant evidence: Yes