How does Bernhard Schlink use imagery in The Reader?

Imagery:

"She felt me looking at her. As she was reaching for the other stocking, she paused, turned towards the door, and looked straight at me. I can't describe what kind of look it was - surprised, skeptical, knowing, reproachful. I turned red. For a fraction of a second I stood there, my face burning. Then I couldn't take it any more. I fled out of the apartment, down the stairs, and into the street."

"I saw Hanna by the burning church, hard-faced, in a black uniform, with a riding whip. She drew circles in the snow with her whip, and slapped it against her boots. I saw her being red to. She listened carefully, asked no questions, and made no comments. When the hour was over, she told the reader she would be going on the transport to Auschwitz next morning. The reader, a frail creature with a stubble of black hair and nearsighted eyes, began to cry. Hanna hit the wall with her hand and two women, also prisoners in striped clothing, came in and pulled the reader away."