She Is Not Invisible by Marcus Sedgwick
This young adult novel tackles the slippery nature of coincidence. While researching a non-fiction book about coincidences, a disabled girl’s father he mysteriously disappears.
Laureth, a blind teenager, leads an unofficial investigation into her father’s disappearance. Her mother refuses to help her and seems on the verge of splitting up with her father.
Readers can immediately identify with Laureth, not because of her blindness, but because they recognize her plight. She is in real trouble–the starting point for any great narrative.
Convinced someone on the Internet has her Dad’s notebook and may know his whereabouts, she books a plane to New York. She has told no one and her only guide to the seeing world is her seven-year-old brother.
She had no idea where her father may be staying; she has no idea where she and her brother will stay. She only goes on a hunch that her father is in trouble and needs her help.
Wearing dark glasses, she must also keep up the pretense that she is not blind. She needs to be seen as the one caring for her brother instead of the other way around or someone may call authorities or notify her mother in England.
Every encounter–from navigating the airport to New York’s public transportation–carries the risk that Laureth will be uncovered as a blind, and, thus, invisible person. Laureth’s ability to find her way in New York and find her father proves the title.