Clara drinks from water bottles so she doesn’t have to hear the tap running. She puts all the dirty dishes in the dishwasher and leaves the building until it’s done running, just so she doesn’t have to hear it. She does everything she can to avoid the sound. Showers, though—those are trickier. She can’t avoid washing herself forever. So she starts the tap, plugs the bathtub, and waits several rooms away until it’s full enough that she can shut off the tap.