Rats
An encounter with a rat sends a young mother back into the world of mental institutions from which she had only recently emerged.
"When she woke again she heard a nurse speak loudly into the phone, describing another patient: "She has a history, multiple hospitalizations." The nurse who was speaking had silver hair. Her tone was less clinical than dismissive. A history. Lizzie didn't imagine, not until much later, that the nurse was talking about her."