Mary started rosemaling in 1989 and has been busily painting ever since. Mary specializes in the Valdres and Telemark styles (each defined by the geographic region where they found their beginning in Scandinavia). Since the school's founding, Mary has been a consistent teacher at North House. She demonstrates annually at Hostfest in Minot, North Dakota. Mary has studied with 8 Gold Medalists and two Norwegian instructors.