When is the best time to file a nonsuit in your civil case?

I am involved in a lawsuit, and the judge is doing some questionable things already in the case. I don't trust what's she is doing, and to protect the case, I want to withdraw it. In there answer, two of the defendants didn't ask for affirmative releif. But one part did in there answer. Can I file a non suit motion, and will it stand?When is the best time to file a nonsuit in your civil case?
I am not following you. If they are defendants, why are they asking for relief? Are they making a counter-claim against you? You need to explain this better.