What metaphors are used in Sexing the Cherry by Jeanette Winterson?

When dog-woman is shown a banana for the first time, Jordan disappears. Soon after, she finds him looking intently at the banana, and when she looks where he looks, she sees "deep blue waters against a pale shore and trees whose branches sang with green and birds in fairground colours and an old man in a loin-cloth." She continues with "This was the first time Jordan set sail," which metaphorically highlights Jordan's wish to explore the world. She realizes that she cannot keep him at home forever, but rather, must allow him to follow his own desires.