How does Jill Paton Walsh use imagery in Knowledge of Angels?

Imagery:

"Severo, over the chink of his bridle and the ring of his horse's hooves, did not hear him. Rafal, holding a horse for him, perhaps did."

"She spoke slowly, tonelessly, with her eyes shut. 'I had a friend,' she said, 'not seen. I was despised and rejected of men, but when I would have died, the spirit moved the wolf and made her foster me. The mountains where I lived had a maker. I had a protector, though I not know a name for him."'