Every day the Dukes of Angoulême had the habit of going to Mass early in the morning.

While Luigi usually listened to her in the Franciscan church in Castegnevizza, where his father was buried, Maria Teresa went to the nearby cathedral. The church, dedicated to Saints Hilary and Tatian, renovated with Baroque forms and decorations in the late 17th century, had become a metropolitan cathedral in the mid-18th century, following the establishment of the Archdiocese of Gorizia. In any weather, even on dark winter mornings, the Duchess reached the cathedral on foot, lighting the way with a lantern she carried herself. "The distinctive figure of this foreign lady, always dressed in black, has long remained etched in the memory of the common people."