A 22-year-old student books the appointment herself, then spends the first minute apologising for taking up anyone’s time. Last autumn was a bad one: her parents’ divorce came through in the same term that a four-year relationship ended. In the months that followed, something began that she cannot put a name to. She still gets to her lectures and still works her weekend shifts, but she has stopped answering her friends, and she is frightened. She has already decided what this means. She thinks she is going mad.