How does E. L. Konigsburg use imagery in From the Mixed-Up Files of Mrs. Basil E. Frankweiler?

Imagery:

"In fact when they emerged from the train at Grand Central into the underworld of cement and steel that leads to the terminal, Claudia felt that having Jamie there was important."

"A statue of an angel; her arms were folded, and she was looking holy. As Claudia passed by, she thought that that angel was the most beautiful, most graceful little statue she had ever seen; she wanted to stop and stare; she almost did, but the crowd wouldn’t let her."