We both shared dim dreams of self-assertion, fantasies where we fought and emerged triumphant. We trusted each other. We made confessions. I was probably the sister he wanted to marry.
-- Narrator (Show Them a Good Time)

Importance: The narrator is describing her relationship with her coworker at the garage, Kevin. This quote establishes the bond she felt with Kevin immediately, and provides a rare glimpse into her feelings and motivations, demonstrating that she longs for confidence and independence. The comment about being the "sister he wanted to marry" adds a dose of the author's trademark absurdist humor.

I wanted these people to know that Kevin was capable of great, complicated feelings, and they had done something to him, something awful, and I did not like it.
-- Narrator (Show Them a Good Time)

Importance: After Kevin is removed from the simulation, presumably because he was not liked by the voyeurs/customers that visit the garage, the narrator is distraught, both because she is now alone...