This is her biography from the book, anything can change in the movie.Hazel Grace Lancaster, born on September 29th and aged sixteen, is the main character of The Fault in Our Stars. She does not have siblings and is the daughter to Mr. Lancaster and Mrs. Lancaster, friend of Isaac and girlfriend of Augustus Waters. Hazel finished high school early and has already begun pursuing a college education. She is diagnosed with Stage 4 Thyroid cancer with metastasis forming in her lungs, but has managed to live with her disease owing to doses of an experimental drug called Phalanxifor (which does not actually exist).Hazel's mother decides that Hazel is depressed and sends her to a Support Group that meet every Wednesday, held in a church basement, referred to as 'the Literal Heart of Jesus' by their leader Patrick. Hazel met Augustus and Isaac in the Support Group a few weeks after she joined in the 'Literal Heart of Jesus'. During that day in Support Group it was found that Isaac would undergo surgery and go blind in a few weeks.Hazel starts to develop strong feelings for Augustus early in the book, even though she tries to surpress these feelings. Augustus and Hazel begin as very close friends, Hazel then falls in love with Augustus- I fell in love the way you fall asleep; slowly and then all at once each others company, they also enjoy playing video games with each other. Show less «