How are the actions of characters and the interactions in their relationships affected by their dreams in the novel, The Vegetarian?

Throughout the narrative, the actions of characters and the interactions in their relationships are affected by their dreams, which at times also reveal motivations for those actions. The most vivid example of this is in the character of Yeong-hye, whose dreams become increasingly - and perhaps horrifyingly - vivid as they continue to suggest that for her, things in her life must change. The dreams of other characters are similarly powerful; specifically, for the artist in Part 2 and, indirectly, for In-hye in Part 3, whose choices are defined and triggered by her reactions to the frightening dreams of her son, Ji-woo.