At the beginning of this scene we see Norman and Marion talking inside the office, and Norman suggests that they eat in the parlour. we assume that Norman would have more power as Marion is agreeing to whatever he suggests. This relates to our knowledge of what a typical women virtue where the women would listen to the man and not question him or talk back.
When they're inside the parlour it looks as if they both have equal power, the way that the camera looks at them at eye level as they speak suggests that they are equally important.
As we see Marion eating the sandwich brought by Norman I noticed that Marion was in the light more than Norman. This suggests to us that Although Marion has stolen the money and was seen as impure (Color change of lingerie) in a scenes Norman looks as if he is mysterious in a sinister way.
We can see from this scene that Marion takes more of a passive role compared to the previous scenes (e.g. with the car dealer she takes more of an active role), this suggests that Norman has control over the situation. This also relates to the stereotypical roles of women.
From this scene the actors performance also suggests the character in control in the scene. Throughout this scene Marion appears to me to be afraid or nervous in from of Norman. This becomes more obvious when Norman says 'I think that.. we're all in out private traps' he also mentions being clamped in traps and people 'scratching' their way out. The word 'scratching suggests to me that it is in a way foreshadowing the death of Marion when she dies and falls in the shower scene. at this point of the scene Marion seems to be very nervous and her dialogue decreases and Norman does most of the talking, And when Marion suggests sending Norman's Mother to a mad house it is more obvious that Marion is in fear. To me it seems that 'Fear' is another factor that gives people authority, in this case it is seen that Marion's fear of Norman gives Norman more Authority and Power in this scene.
