My attorney rang me today to tell me what the judge decided on my case. To make a long story even longer: I worked, I did not get payed, I let my demand be confirmed by law. I got the sum; the customer went to court and she invented demands in return, in order to get this money back. The judge was too old to understand what a web designer does, and decided that both of us were wrong and share the cost. Okay, he did not yield to my customer's demand which would have been a lot worse, but in addition to loosing my fee, I have to pay a few hundred extra $. I was a little upset, but my husband said, he's glad it's over after 3 years of agony. It's just money, it can be replaced.
On the other hand: Martha Marshall was so kind to feature my embroidery on her treasured items' list in Etsy. Thank you, Martha!