You should be grateful when strangers are kind.
Francine is checking out at the market when she realizes she forgot her wallet, and the person behind her, Lany, pays for her groceries.
Francine wants to keep her dignity.
Francine thanks Lany and tells her she will pay her back.
Francine tells Lany to mind her own business and walks out of the store without her groceries.
Francine goes home with her groceries after exchanging numbers with Lany, intending to pay her back in the future.
Lany never helps another stranger in need again.