Tasseor is best known for her sculptures, which helped to set an artistic standard for Kivalliq sculptural style along with artists like John Pangnark and Andy Miki. Using hard steatite, she created minimalist yet deeply moving works. Like many artists working with tough stone in the region, she worked with the stone rather than against it. Instead of sculpting detailed, realistic sculptures, Tasseor instead would sculpt minimalist figures that appeared to emerge from the stone using incised lines for added detail. Often, her process was visible on the stone: file marks were left exposed, showing her hand and the human effort it took to create the piece.
Though abstract, Tasseor’s work often focuses on the themes of familial and community relationships. Her figures rarely exist in isolation, but rather emerge in groups from the stone. Her careful handling of the spatial relationships between the figures transforms the cold stone into a warm examination of the importance of relationships to Arctic life. Tasseor was a well-respected elder in her community who helped to support many living in Arviat, so her focus on relationships seems to be an extension of her own life.