I also think you did the right thing, and long may we find people who keep their word. And while she may have gotten a fantastic pattern free with no thank you, we can only hope that karmic justice hits her where it hurts, in the final product.
Personally, I wouldn't be surprised if she didn't show up at the next show bitching about how the pattern didn't live up to it's name!!! And don't you just wish she would!!