I am so pissed off

I get so pissed off recently.

This conversation happened on Friday evening at my office building:
Me: J, you must do leh.
J decided to get crazy and start screaming.
J: Just now, my client is here. I dont want to say. Stop giving me crap! I have been torturing the nonsense. This is marble floor. It will have stains.
Me: I know it will have stain. Tat is why I only ask you to clean your stain.
J: My floor is also marble floor. If you pour on it, it will have stain. If you want, I can bring for you a marble flooring and show you.
J: Come on, before you come in, I know more than you already.
As for me, I kept quiet. She is behaving as a mad dog in the building where I am working and it is a public place. Why should I behave like her?

Seriously,
First, I was not talking in a very rude manner to her.
Secondly, bloody hell.. Even before she came into tat office, I had 2 - 3 yrs of experience before her. Dare to act senior before me.
Thirdly, she has no manners. Old woman

When I am so pissed off and stressed over work already, she must be like tat. When I am quiet, ppl have to think tat I am a sick cat and step over me.
When I have a bit of anger, they say tat I am rude.