How is the character Mary Dempster described in a memorable way?

Mary Dempster is characterized in a memorable way by her description as having "a face like a pan of milk." This imagery evokes a sense of purity, calmness, and simplicity, which aligns with her role in the novel as a saintly figure and a source of comfort for the protagonist, Dunstan Ramsay. The specific comparison highlights her tranquility and the milk-like quality of her complexion, suggesting innocence and a certain otherworldliness that sets her apart from the more complex and troubled characters in the story. This perception is deeply connected to how Dunstan perceives her throughout his life, marking her as someone who embodies spiritual purity and love. Other descriptions, while vivid, do not convey the same sense of serene simplicity and lasting impact on Dunstan and the narrative as a whole.