We talked for an hour and had apple pie and coffee, slowly. Finally, we got up with Carolyn taking my hand. Slightly embarrassed, I tried to pull away but her grip held me. I let her have her way as she led me down the hallway with her mother right behind me. . . . Carolyn waved again. I looked back, waving . . . . Her people were like Mexicans, only different.

Which of the following statements best describes the irony in this excerpt?