I LOST THE CASE

I am trying to come to terms with the fact that a judge ruled against me on a case I had already won for no possible reason other than that I offended him in some way. It could have been my age, my attitude, my manner that reminded him of a person he didn't like but whatever it was, he refused to enter my letter of confirmation that I had sold my car for 3,000 as evidence because it was hearsay and accepted Renee's fraudulent letter from her DAUGHTER asserting I had made a deal for $1400 (no date by the way) and accepted the testimony of a computer expert that it is possible to alter e mails even though on my particular machine I cannot do that.
My decision now is how to move forward and the questions I must ask myself is how much of my energy do I want to spend on this evil, angry woman? Inevitably the more I fight her, the more I descend to her level.
Perhaps time will dull my horror that the legal system that is supposed to protect me from harm has failed me once again. I sit here staring at a valid e -mail stating my price for my car, and another valid response stating that that price was accepted. I read further e mails saying that I tried to be accommodating, I charged no interest, I allowed Renee to set the schedule of payments to her budget and sold her the car for 2500 LESS THAN the blue book value. I let her drive it immediately without waiting for full payment because she said she was desperate for a car to get to work.
Why am I being punished this way?
I think the reason is that I am an irresistible target.
I live alone, have no family to back me up, no name that is recognized in the greater community and because of my age, my reliability is in question.
I know there was a miscarriage of justice and I know I am right. I have neither lied nor cheated. However I am uncertain if 1600 is worth another battle.
I keep thinking if someone had stopped Hitler when he was only committing small violations to human rights, perhaps the holocaust would never have happened and I think to myself, "You have a valid contract; You won the case the first time; Stop her before she does this to other innocents. "
And then I admit that I don't want to "get back" at Renee for such noble reasons. I want to kill her and destroy her because she has lied and cheated knowingly, has harassed and threatened me and won because of those very actions.
I cannot believe these motives justify further legal action.
And yet....and yet....