I am a soon be a lawyer and have recently been taking on (not legally, just academically at home) some of my uncles cases to get some experience. He has got a female lawyer that shows me no respect even though I do not work for her. I am only there to follow proceedings. I am usually nice to her but she almost always rude and acts like an absolute cunt. The other day we were at court and she asked me for a payment (small amount for the paperwork). I said I didn't know about any payments and she straight up asked me what the hell I was doing there in that case and demanded I pay in a couple of days since my uncle was out of town. I was pissed but the last thing I want to do is talk to or argue with a woman like that. I will anyway be seeing her at the court again as I need the experience. Again, I do not work for her and I do not have anything to do with the cases, I just make appearances to get experience. How do I deal with this the RP way.