How does Muriel Spark use imagery in The Public Image?

Imagery:

"As for Annabel, she was portrayed as cool and equal to him in all these respects, except that she was a tiger-woman at heart and in 'the secret part of their lives.' This tiger was portrayed only by her eyes; it was an essential of the public image that the tiger quality was always restrained in public."

"Then Annabel got ready to go, possessed by a furious horror at the abomination Frederick had brought down upon her. He had sent that party, that intolerable party, to be blood on her hands, blood on her public image..."