During her second year at Brandeis, Davis decided to major in French and continued her intensive study of philosopher and writer Jean-Paul Sartre. She was accepted by the Hamilton College Junior Year in France Program. Classes were initially at Biarritz and later at the Sorbonne. In Paris, she and other students lived with a French family. She was in Biarritz when she learned of the 1963 Birmingham church bombing, committed by members of the Ku Klux Klan, in which four black girls were killed. She grieved deeply as she was personally acquainted with the victims.