"As I Wake" by Elizabeth Scott

Ava wakes up in a hospital. Her doctors tell her she's ready to go home, and her mom is there to escort her, but she can't remember anything. Ava has a severe case of amnesia, with no memory of her life before the hospital. Her mom seems like a nice enough woman, and her friends at school keep her entertained, but Ava knows something is not quite right. And then she starts having flashbacks. Ava can remember working for the government, as a special type of spy. She had to keep watch over certain people, reporting back on their activities. But when these memories resurface, Ava blacks out. Someone doesn't want her to remember. And Ava doesn't know who to trust. Should she accept the life people tell her she's lead, or dig deeper into her head, to try to remember what really happened?