On June 8, 1921, immediately after her return from Italy, Lenski married Arthur Covey, a muralist who had been one of her instructors at the School of Industrial Art and for whom she had worked as an assistant on mural projects before she left for London. Covey was a widower with two young children, and in 1929 Lenski and Covey had a son, Stephen. The family then moved from Westchester County to "Greenacres," a farmhouse in Harwinton, Connecticut, built in 1790.