he had the sudden notion that if he were simply to open the door and walk in , he would find himself in his own lobby , mandy 's tiny red galoshes flung helter-skelter under the hall tree where brianna 's disreputable duffel coat hung , crusty with dried mud and smelling of its wearer , soap and musk and the faint smell of her motherhood : sour milk , fresh bread , and peanut butter .