For 10 points identify this prostitute whose nickname literally means "ball of fat," the title character of a Guy de Maupassant short story.
Fleeing the city of Rouen, she is ostracized by her traveling companions, who include a merchant family, a writer, a politician, an industrialist, and an aristocratic couple.  Their attitude towards her changes, however, when it is learned that only she can earn them safe passage.  But when she does so, at the price of sleeping with the German general, she is ostracized even worse than before.  For 10 points identify this prostitute whose nickname literally means "ball of fat," the title character of a Guy de Maupassant short story.
Fleeing the city of Rouen, she is ostracized by her traveling companions, who include a merchant family, a writer, a politician, an industrialist, and an aristocratic couple.  
Boule de Suif (accept Elizabeth Rousset; accept "Ball of Fat" on an early buzz)