Pratt attended Mount Allison University, studying Fine Arts under Alex Colville, Ted Pulford, and Lawren P. Harris., completing her degree in 1961. In her second year, she met the artist Christopher Pratt while they were both students there; they married on September 12, 1957. For many years Pratt did not paint as she was busy raising their 4 children and supporting her husbands career. Immediately after, they moved to Scotland, where Christopher had been accepted to the Glasgow School of Art.