The motif (recurring thread) of the face reappears in this story. Give a couple of key quotes and comment on what you make of its significance

Are you referring to the reflections in the mirror? If so, in Part Four, Mr. Rory puts the Waverly and her mother side by side so they can see themselves in the mirror. Lindo tells Waverly she can see her future in the mirror as she sees herself and her own mother, back in China, when she was a girl. When she was in China, Lindo's mother told Lindo her fortune based on the shape of her head.

Later in the same section, they look at each other in the mirror again, and Lindo cannot tell which face is American and which is Chinese, similar to when she returned to China last year after being away for forty years. Everyone knew Lindo was not Chinese any more, and she decides to ask her daughter what changed.

This motif directly relates to Americanization, something even the women don't understand. They search their faces for differences and can't visibly discern how they've changed. In context, the faces in the mirror also speak to identity, the gateway between the characters' inner and outer selves.