How does Alice Walker use imagery in The Diary of an African Nun?

Examples of Imagery:

"She dreams; dragging herself across the world." (pg. 3)

"A squeeze around the flowers in her hands chokes off three and four and five years of breath." (pg. 6)

"But I fit into my new surroundings perfectly; like a jar of cold cream melting on a mirrored vanity shelf." (pg. 13)

"She was panting and sweating, her ashen face slowly coloring with the belated rush of doomed comprehension." (pg. 33)

"The heat from the sun is oppressively hot but she does not feel its heat so much as its warmth, for there is a cold spot underneath the hot skin of her back that encloses her heart and reaches chilled arms around the bottom cages of her ribs." (pg. 36)