The encounter with Ferdiand creates a conflict between her love for Ferdinand and the expectations of her father, the social limits willed by God and her religious conviction. This way, the Immanuel Kant's opposition between duty and inclination becomes clear.
The interaction with Ferdinand causes a struggle between her feelings for him and the societal rules dictated by her father, the limitations set by religion, and her own beliefs.  This situation illustrates the conflict between duty and desire, as articulated by Immanuel Kant.