“The use of poisonous mushrooms isn’t about women playing some zero-sum game with controlling men. What the trope really does is prompt viewers to consider what female agency can look like in situations that are overwhelmingly shaped by sexism—and it’s not a pretty sight. The women mimic the language of violence articulated by the men in their lives, in one of the only ways available to them. Unable to emancipate themselves fully from the trappings of their gender roles, their only recourse is to do harm before they suffer further. In one of the last scenes of Lady Macbeth, when Katherine implicates her lover and maid in the murder of a child, her face is eerily impassive, mirroring the expression of her husband early in the film when he regards her with cruel indifference. In that moment, they are one and the same.” I did not like Lady Macbeth, but that quote gets at what the story really is.