buyer/seller integrity question

I sold a car a number of years ago that had some issues, all of which were disclosed in the advertisement, including the overdrive function not working, and it needed a new alternator. Woman came to buy it, was all excited about getting a running car for $400.00, I explained clearly what was wrong with it, and she said she understood that and it was fine.
A week later she calls me and is pissed about the costs of fixing it, etc, demanding that I refund her money. I highlighted the part of the bill of sale that said 'sold as is where is' and sent her a picture of that, along with a message that I would see her in court.
Never heard from her again.