I would prefer to use "colleague" in the office work. 

I have to get her permission before I can put forward to my proposal (I'm not sure if this is you want by your context) but I consider I can change the game rule to bypass her permission in the future. 

Because I don't like her, I made a request to change my seat beside her.  

Argument with my cowerker coworker

Today, I got the permission to change the seating arrangements in my office.

Because I earnestly don't like my coworker. For example when I propose a task carry out that efficiently to increase our efficiency, she demands me first you should need my that I first seek her permission. (I can't understand the meaning of your original sentence)

Her current position is higher than me mine but only for this and that's the only reason she acts this way, I think I do not have to obey her opinion.

Hi Mika-san, I can't quite understand some of your sentences. The correction above are based on my guesses of what you were trying to say.