What is the importance of the Silver Dolphin in the novel, Scat?

The Silver Dolphin is the restaurant that Millie takes Duane Sr. and Duane Jr to. There, the three of them have a meal in a place with a name that symbolizes group spirit. Millie is trying to create a group spirit and a feeling of communion with the men by sharing a meal with them in this restaurant. It shows that she cares about them and their well-being.