Recently I was asked this question by an owner of her work. If you look at all the paintings in Mary’s “gallery” here, you’ll see many abstract paintings. In fact, her art only changed when she was much older and had moved to Maine from California and shared studio space with a more representational, impressionistic painter and near an old friend who was a very successful painter (Abbott Pattison, http://www.hpattison.com/abbottpattisonoilpaintings) and became more influenced. Also, her vision began to fail in her late 70s and she began painting from photos.
