Stiefel is an advocate for the arts as well as an artist. She has been a chairperson for the Georgia Council of the Arts; served on a Congressional Citizens Advisory Committee on the Arts, 4th District; served on the Georgia Panel of Information on the Arts, the Arts Festival of Atlanta (1971-1981); served as aboard member for the Southern Arts Federation, Stetson University School of Music, Studio for the Arts (Highlands), the Atlanta Boy Choir, the DeKalb Council for the Arts, and the Bascom-Louise Gallery(Highlands).

Rosemary has recently completed a collaborative project with art and music with musican John Clark Stiefel.