The Professor's housekeeper and a single mother. She was hired by the Professor's sister-in-law through the housekeeping agency and is the tenth housekeeper the Professor has gone through. She initially feels frustration at the Professor, who shows interest only in mathematics, but through observing the Professor's kindness and his passion for mathematics, comes to feel respect and affection for him.
A single mother hired by the Professor's sister-in-law is the tenth housekeeper for the Professor. Initially frustrated by his lack of interest in anything other than math, she develops respect and affection for him as she witnesses his kindness and passion for mathematics.