Henry traveled to Europe in 1962; she was divorced in 1964, which marks the beginning of her career as a mature artist. She lived in Mendocino, California, running a bed-and-breakfast and painting. Matthew Kangas writes, "It was as if, after 20 years of fulfilling conventional expectations as a wife, worker, and mother, she was released into a constant stream of creative production, capturing the exuberant hedonism of Northern California, while reined in by the consummate formal control she had assimilated as an American Constructivist in Chicago." Her 1968 show at Arleigh Gallery in San Francisco resulted in a write-up in "Artforum".