" When she was younger, Ellie used to believe that her invisibility was a metaphor for something else, assuming it was her awkwardness, her fear of saying or doing the wrong thing. She had thought as she grew older, more confident, wiser, she would outgrow this not being noticed. But lately, Ellie really felt like a ghost. She would be in a place, but not really there. People looked through her, past her. Her invisibility had taken on a life of its own. It wasn't a metaphor anymore, or a defense mechanism or eccentric little tic. She was actually invisible. At least, that was how it felt to her.
Ellie wondered whether her parents were to blame. They were, after all, children of the sixties who had met at a love-in or lie-down or something of that sort, about which Ellie knew little except that a lot of drugs had been involved. Could Ellie's lack of physical presence be a genetic mutation caused by acid or mushrooms? Ellie grew up on their hippie commune among the highest, densest redwoods, where they dug their hands deep into the soil and grew their own food, made their own clothes. So perhaps it is there that the mystery is solved. Ellie indeed was a child of the earth, a baby of beiges and taupes and browns and muted greens. Nature doesn't scream and shout, demanding constant attention, and neither did Ellie. Maybe her invisibility was just her blending right in. "

― Amy S. Foster , When Autumn Leaves