"While some paintings of artists in their studios depict the moment before work begins or give a glimpse midway through the process, this picture shows a triumphant completion. Holding her palette, brushes, and a mahl stick, used to steady the painter’s arm, Schalcken looks out at us and points at her creation. This painting was once attributed to her brother and teacher, Godfried. But a cleaning revealed Maria’s signature in the upper left corner—making it clear that the picture is a self-portrait. This is one of only two known paintings by the artist." https://collections.mfa.org/objects/549580/selfportrait-in-her-studio?ctx=a825a090-74d4-4e9b-bfa5-5731d1426cc5&idx=4
Maria Schalcken, Self-Portrait in Her Studio, Oil on panel, 44.1 x 34.3 cm (17 3/8 x 13 1/2 in.), Museum of Fine Arts Boston