Actually had a idea for something like this, but the protagonist was the 6 year old, and was freed after 10 years. Then she was recruited by a agency to find the people that murdered her parents and framed her.
Prompt -- you slowly start to realize that all of your friends are undercover agents tasked with keeping you alive. then, at your birthday party, with every friend surrounding you, the people trying to kill you finally find you
That's me. Im the nightmare emptier. The horrible things I've seen...who could be have such horrible dreams?? The reason I am the one whose job this is, is because I cannot dream. I cannot dream nice dreams or terrible ones.
Prompt -- a good friend that you grew up with dies, but a year after the funeral, no one remembers him (not even his parents) and all traces of his past life online are gone. You become determined to prove he existed.