Marian has a problem with her identity in that Peter is taking it away from her. She has let him suck her dry, although he complaints that such is what women do to men. However, in making her act, behave, dress, and be the way he wants her to be he feels thathe is doing a favor to a relationship which he is building up to look picture-perfect and successful. When Marian begins her detachment from the self, she sees consumption in a metaphoric and allegorical perspective, reflecting the consumption she feels that is happening to her. So, in conclusion you can definitely say that yes, her refusal to eat was a reaction against the consumption of her true self.