After leaving Britain in 1927, the Countess settled in Paris, choosing to live near the
Church of Saint-Augustin. The area was a prosperous and solidly bourgeois neighborhood, and here she managed a comfortable, elite Parisian lifestyle. Around this time, she began to attend Parisian café gatherings, spaces where intellectual and political discussions were common. During her
Catholic confirmation, she took the Catholic name "Claude Kinnoull", after the
Catholic saint Claude La Colombière. Simultaneously to their mission, another mission, not related to the Church, had embarked to Asia, going by the name of
La Croisére Jaune. The journey, completed on 24 January 1932, covered 37,526 kilometers, then considered a world record for distance travelled by automobile. Their vehicle was specially equipped with six low-pressure tires, a six-cylinder engine, and additional tanks carrying 300 litres of fuel and 100 litres of water. The expedition had a missionary character, with visits to 126 centres and the establishment of six new missions. De Moor also produced a feature-length film of the journey, titled
Le Croisière bleue. Due to the technical knowledge she had acquired years earlier, she served as the primary driver of the vehicle, handled mechanical repairs and ensured the journey could continue despite the challenges of terrain and climate. At the time, her capacity to manage such a technically demanding role was considered exceptional, particularly for a woman of her social background. The stated objective of the
Croisière Bleue was to visit
Catholic missions scattered across the continent. At each stop, the travelers provided assistance by transporting missionaries, facilitating transfers between posts and
delivering supplies,
food,
medicine and
religious materials, especially
Bibles and copies of the
Catechism of the Catholic Church. In total, they visited over a hundred mission centres and supported the establishment of new ones. The mission-oriented nature of the expedition underscored the deepening of the countess's commitment to Catholicism, linking her more closely to networks of European clergy and religious workers stationed in Africa. In 1933, Vincent de Moor was appointed head of the , a position made possible through the continued financial and personal support of the Countess of Kinnoull. After completing the African mission, Hamilton-Fellows returned to
Paris. There, she joined the
Third Order of Our Lady of Mount Carmel and established a
hospice for terminally ill women on . She also frequented the
Café Le Select, a meeting place for writers and intellectuals, where she often entertained her close friend Léon de Poncins. During this period, she also formed a friendship with the
Basque painter
Ignacio Zuloaga, who offered her painting instructions in his
Montparnasse studio. Later, she continued her studies on painting with Zuloaga in Spain. == Press photographer during the Spanish Civil War ==