I think that it is interesting how Vashti worships the machine as if it were her religion. The idea of it brings her comfort and happiness, just like religion does to many people today. However the machine as a religion has started to take over her life as she believes she physically cannot live without it.  It has become a dominant presence in her life to the point that she listens to everything it says. She never thinks to question the machine because she has been taught to accept it. Vashti would rather live with what she knows than have to learn and accept something new.