Geller studied at the School of the Museum of Fine Arts in Boston, and taught there with Karl Zerbe.
She was one of the foremost authorities on encaustic painting techniques. lieutenant was at the Museum School that she began painting with encaustic, a mixture of pigment and hot wax. She first received acclaim as a painter of "organic abstractions" in the 1940s when she exhibited with a group of other emerging artists later known as the Boston Expressionists.\r\nHer work was more abstract than that of Zerbe and other Boston figurative expressionists.
After marrying the composer Harold Shapero in 1945, Geller continued painting and exhibiting, and taught art classes at the DeCordova Museum in Lincoln, Massachusetts. She has been active as a painter for over sixty years.\r\nAs recently as 2012 her encaustics were shown in a major exhibit, The Future of the Past: Encaustic Art in the 21st Century, at the Mills Gallery in Boston. The exhibit also included a video demonstration by Karl Zerbe and an interview with Geller.
On October 22, 2015, Geller died at the age of 93.\r\nArt historian Judith Bookbinder names Geller, along with David Aronson and others, as one of the emerging artists in the 1940s who influenced the direction of modern art in Boston. In 2002, Geller"s early work was included in The Visionary Decade: New Voices in Art in 1940s Boston at Boston University, a retrospective of the vibrant art scene in postwar Boston. Jean Gibran, wife of the artist Kahlil Gibran, names Geller as one those "who have contributed in unique ways to the flowering of Boston Expressionism."\r\nGeller was a leading expert on encaustic painting who experimented with the medium and developed her own methods, which she used and taught for decades.\r\nAn interview in which she discussed her methods was featured in Arts magazine in 1957, and she has contributed to books on the subject.
Member of Arts Wayland Association, Boston Visual Arts Union.
Married Harold Shapero, September 21, 1945. 1 child, Hannah.