I should have said before but the reason I posted the photo of my mother’s painting yesterday was because I had been reading Andy’s (Patterns That Connect) article. https://patternsthatconnext.wordpress.com/2015/01/20/chance-and-order-at-eagle-gallery/. I do so wish I had seen that exhibition.
Here’s another of her paintings from the mid 70s, similar in theory perhaps to Andy’s intricate paintings from 2015. A fascinating link to four decades ago.