Growing up in Napa Valley, California, she studied art at Sacramento State University and moved to Europe in the 1960's to further her studies in Germany. Upon her return to the U.S. in the 1970's, Marston moved to New England, later Pennsylvania, where she taught and studied American Folk Art.
In the 1990's she moved to the Southwest, painting and studying watercolor and silk painting. She then moved back to the East Coast, and maintains her main studio in Philadelphia, Pennsylvania.
Employing various media and subject matter, she travels around the world, fulfilling commissions for private and corporate clients. In 1983 she painted "In the Beginning Was the Word: Noah's Ark" for the Houston Read Commission and First Lady Barbara Bush's Literacy Campaign.
Her work has been exhibited at the American Museum for Folk Art in New York, the Smithsonian Museum, and the White House in Washington, D.C.
Marston's work has also been featured in magazines and periodicals, including Country Living, Country Home, Early American Life, and the New York Times.