AITA for suing my ex friend.

I (32M) was friends with a woman (34F) who lives in my neighborhood. We did something like a business venture together that did not work out and after that, the relationship broke down. None of us suffered significant harm from this failing but I had good cause to believe that she had really wronged me.

I decided to sue her over this and my lawyer also felt I was right and she had wronged me. I took a very good lawyer who has high fees.

The case is being heard and my lawyer recently requested me to get some evidence I had access to that would serve as additional proof. However when I requested this, I realized that I had been wronged by someone else and she was completely innocent.

I showed this to my lawyer and he said we should just not produce this evidence and that he is confident we will win with the other evidence.

I already have to pay my lawyer for his work so far and I was counting on winning the case to afford his services.

This is a civil case and not a criminal one and I cannot give identifying details about what the case is about.

I feel a little bad since she is a single mom and I know it has been a little hard for her lately (for reasons other than the venture with me not working out).

AITA here since I did not know when I filed the case and I will accept whatever judgement I get from the courts.