Susiehyer has been drawing and painting since she was a child. Attending art programs at Moravian College, The Baum School of Art, and the University of West Florida in the 1970's, she continued to study, attending the Art Students League of Denver and participating in workshops, with artists such as Quang Ho, Kim English, Ron Hicks, Jay Moore, and Kevin Weckback. In 2001 she completed the Denver Botanical Gardens Certificate in Botanical Art and Illustration.
This award-winning artist has been working professionally since 1976 and has been the recipient of a number of scholarships, grants, and awards for her work, including two international design awards. Her work has appeared in numerous galleries and national exhibitions, hangs in many private and corporate collections, and has been published in the celebrated books "Art of the National Parks: Historical Connections, Contemporary Interpretations" and " Landscapes of Colorado". Her work has also been featured in the magazines Southwest Art, Fine Art Connoisseur, and Art of the West, and on the covers of Art Life, Evergreen Living, and Mountain Country Life. Her work is consistently included in the American Art Collector Series of books, and the "Best of Art and Artists" series. She has been a National Vice President of the Women's Caucus for Art, President of the New Orleans Chapter, and is involved in several other professional organizations such as Oil Painters of America, the American Impressionist Society, Plein Air Artists of Colorado, and Plein Air Painters of Hawaii.