Amy Strangled a Small Child (1998)

Amanda B. James is Amy, a severely disturbed, insecure young woman with a lot of gross habits. Joe Christ is her film-student friend who's been interviewing her for his graduation project. After it occurs to both of them that Amy has nothing really interesting to say about her life, she concocts a story of a "repressed-memory" flashback in which she'd murdered a playmate as a youngster. Is she telling the truth? Either way, she's out of her mind...