Peck resided in an art colony in Leonia, New Jersey, with her collaborator and husband, artist John Scott Williams.

Her most notable illustrations and artwork were published in three books early in her career: Shakespeare's Sweetheart (1905), A Lady of King Arthur's Court (1907), and In the Border Country (1909).

[2] She took classes at the Pennsylvania Academy of Fine Arts[3] where she studied under American Impressionist painter and teacher William Merritt Chase.

"[6] In 1906, Peck married British-born illustrator John Scott Williams (1877–1975), and they produced two children together, Aynard and Conway.

[15] Towards the end of her life, art historian Helen Teri Caro located Peck and acquired over 100 pieces of her artwork on behalf of the Glenbow Museum in Calgary, Alberta.

[17] Peck's career in illustration began in the early 1900s with her work for publisher George W. Jacobs in Philadelphia, Pennsylvania.

Notable works from this period include illustrations for Sara Hawks Sterling's Shakespeare's Sweetheart (1905) and A Lady of King Arthur's Court (1907), and Josephine Daskam Bacon's In the Border Country (1909).

[21] Art historian and illustrator Walt Reed describes Peck's style as "decorative in composition and sensitive in rendering".

[27][28] According to Elizabeth H. Hawkes, curator emeritus of the Delaware Art Museum, the style consisted of "using flat, brightly colored figures boldly outlined and placed against a patterned background.

She also provided material for early issues of the similarly themed Treasure Chest title,[33] including a few episodes of "The Robinson's Rumpus Room" feature and the cover for Volume 2, Number 9 in 1946.

[15] Along with Florence Scovel Shinn, Rose O'Neill and others, Peck was one of the first 20 women to become a member of the Society of Illustrators by 1922, representing about 10% of the total membership.