Fredrik Backman said this quote

She is told all the things she shouldn’t have done: She shouldn’t have waited so long before going to the police. She shouldn’t have gotten rid of the clothes she was wearing. Shouldn’t have showered. Shouldn’t have drunk alcohol. Shouldn’t have put herself in that situation. Shouldn’t have gone into the room, up the stairs, given him the impression. If only she hadn’t existed, then none of this would have happened, why didn’t she think of that?