How does Penelope Fitzgerald use imagery in The Book Shop?

Examples of Imagery:

'She was in appearance small, wispy and wiry, somewhat insignificant from the front view, and totally so from the back.' Chapter 1, pgs 7-8

'Among these the popular war reminiscences, in jackets of khaki and blood-red, faced each other as rivals with bristling hostility.' Chapter 3 pgs 38-39

'The wet sand and shingle sank as though unwilling to bear her slight weight, and then oozed up again, filling her footprints with glittering water. To leave a mark of any kind was exhilarating.' Chapter 5, pg 60