She's unsure who, and where she is. She doesn't have a name, and she has no recognition of her surroundings. However, as the story progresses she gets an idea with the help of a consistent visitor.
She had no clue till she was needed. Kept in the dark her whole life but then they needed her. She was ordinary but then a life she forgot calls her to go from school work to working with the government. But that didn't mean she hasn't made enemy's.
EDITED VERSION