Marianne has been associated with PAFA since 2005 as a committee member for the Annual Student Exhibition Preview Party. She eventually co-chaired the event as an active member of the Women's Committee. She currently serves on the Board of Trustees, where she has been an active member for two years.
Marianne has served as the Peale Circle Co-Chair since 2018 and currently serves on the Development Committee as well as the Public Engagement & Education Committee. She also serves on the Board of Governors.
- Boys' Latin Charter School of Philadelphia Foundation Board
- Bryn Mawr Hospital's Women's Board