Since graduating from Gray's School of Art Mhairi has continued to live and work in Scotland. Group exhibitions have included the Glasgow Independent Studio where she was a member for several years, The Royal Scottish Academy, The Royal Glasgow Institute, Visual Arts Scotland and The Royal Society of Painters in Watercolour. Solo and Artist in Residence exhibitions include The RGI Kelly Gallery, Glasgow, Hospitalfield House, Arbroath and La Rectoria, San Pere De Vilamajor, Barcelona.
She has been awarded the David Gordon Memorial Trust Award, The RGI Kelly Exhibition Award and The Royal Society of Painters in Watercolour £3000 Travel Scholarship which she used to travel to Chile and Argentina.