Lia Kahn

From the Wikipedia page for the novel: Lia Kahn - Once a beautiful, popular, smart 17-year-old, Lia had her brain downloaded into an artificial body after a terrible car accident left her near death. Her new body does not need food or air, is virtually indestructible, and will not die. Lia's sister, Zoie, believes that the real Lia is dead, and their father is overheard saying that he wishes he had not had Lia's brain downloaded after the accident. Lia's friends and boyfriend from before the accident refuse to accept the new, mechanical Lia. Auden is the only who treats Lia like a person, and the two grow close because of this, until Auden blames Lia for the accident that leaves him severely injured. (https://en.wikipedia.org/wiki/Skinned_(novel))