Nina is initially presented as the stereotypical wealthy, jealous housewife, seemingly resentful of the young, attractive Millie. Her erratic behavior, combined with her immense privilege, makes her seem spoiled and ungrateful, leading Millie to perceive her as the villain early in the novel. Nina fits the cultural stereotype of an older woman jealous of the younger, prettier nanny, but this narrative is subverted as the story unfolds. Instead of being jealous, Nina uses this assumption to her advantage, knowing that no one—including Andrew—would question this dynamic. Rather than competing for Andrew’s affection, Nina strategically manipulates the situation so that Millie takes her place, allowing her to escape from Andrew’s control. 

Nina’s actions, which appear erratic and spiteful at first, are eventually revealed to be survival tactics in a deeply abusive marriage. The rules she imposes on Millie, which seem petty and harsh, are rooted in her own experience of Andrew’s control. Nina has spent years being psychologically tormented by her husband, forced to conform to his standards, even down to her appearance, from her blonde hair to her white wardrobe, choices that were not hers to make. As her perspective unfolds, it becomes clear that Nina is not the villain, but a victim trying to reclaim her freedo 
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Nina’s love for her daughter, Cecelia, is the driving force behind her actions. Her fear of Andrew’s growing control over Cecelia, and her desperation to protect her, pushes Nina to manipulate Millie in order to save both herself and her child. While she ultimately succeeds in escaping Andrew’s abuse, Nina’s actions are morally complex, as she knowingly puts Millie in danger. Her character arc is one of survival, navigating a world where women are forced to use whatever tools they have—including the exploitation of others—to break free from cycles of abuse. The solidarity between the two women grows from shared trauma rather than competition, highlighting Nina’s awareness of the deeply entrenched misogyny around her.