What causes the conflict between Vivian and Tante Lou over her relationship with Grant?

The conflict between Vivian and Tante Lou primarily stems from generational differences and differing values regarding relationships and independence. Tante Lou, who holds traditional views, disapproves of Vivian's relationship with Grant, seeing it as a distraction from her responsibilities and a potential source of instability. In contrast, Vivian seeks personal fulfillment and emotional support from Grant, which Tante Lou struggles to understand. This tension highlights the broader themes of love, sacrifice, and the complexities of personal choices within familial bonds.