Complex sentence: By early December she and her children were "taken up" by the "society women" of Chicago, and she was noted as an avid supporter of impressionism and American art, and was offering classes in her home.
Split into simpler sentences: By early December she and her children were "taken up" by the "society women" of Chicago. She was noted as an avid supporter of impressionism and American art, and was offering classes in her home.