Hi and welcome
It is impressive how courageous you stand in for your inner feelings and conscience. And for sure you are a great friend.
It is very good for you, that you do that at a young age and that you see the moral flaws in this HUMAN organisation.
So now to your case. If they didn't tell you it was a judicial committee, they are just trying to remind you, that you shouldn't have contact with a df'd person. Maybe they will ask some questions to test your loyalty.
They might ask in different ways. "Do you believe the Governing Body is the faithful and discreet slave?" or "Do you believe the organisation is guided by Jehovah?"
If it is not a judicial committee and you want to continue your fade just tell them kindly you don't want to discusd this matter with them.
They have no power at all over you.
I'll give you a link to the thread about the loyalty question and my judicial committee.
I wish you all the best.
You are courageous and strong.