Answer:
looked like as if she was nervous and anxious.
an effort she put to avoid making August feel insecure and judged.
Explanation:
In the book "Wonder", Mrs. Gracia ‘shiny smile' looked like as if she was nervous and anxious not to offend or act differently in front of August.
Though she had been working and taking care of all sorts of children in the school for so many years, August was quite different and extraordinary.
Mrs. Gracia smile could be understood as an effort she tried to make in order to avoid making August feel insecure and judged. She already knew August's circumstances, therefore, she put up with a ‘shiny smile'.
