Hall found the watercolor medium liberating. She approached watercolors with intuition and improvisation.
Hall spent most of her formative years in New York City during the 1930s and then moved to the small coastal town of Prospect, Maine in the early 1940s. There she became a noted art teacher, sculptor, and painter of landscapes with a spontaneous, modernist style much influenced by John Marin and Marsden Hartley. Though she painted with oils, and with mica and acrylic, Hall’s favorite painting medium remained watercolor.