Throughout her career, Haynes was influenced by the works of the Hudson River School, which emphasized the importance of capturing the American landscape in art. Notable works include 'A Village Scene' (1900) and 'The Old Mill' (1915), both of which showcase her ability to capture the charm of rural life.

As a pioneering female artist, Haynes played a significant role in promoting women's participation in the arts during this period. Her artwork can be found in various private collections, as well as institutions such as the Brooklyn Museum and the Smithsonian American Art Museum. Despite facing challenges and limited recognition during her lifetime, Haynes' contributions to American art have been acknowledged by art historians and scholars.

Today, she is celebrated for her unique perspective on everyday life and her enduring legacy as one of America's leading painters.