Her genealogical sketch is here.
From grace-grimaldi.livejournal.com/59315.html.
Is it 1806 or 1816? Probably 1816 based on the bateau v. square neckline and the forehead left bare in the center decorated with a bandeau. Her bare-shouldered sleeves would be fashionable about 90 years later.
Keywords: 1816, Molinari, Natalia Golovkina-Saltykova, Golovkin family, Saktykov family, Countess, Russian, neo-hurluberlu coiffure, bandeau, off shoulder bateau sweetheart décolletage, modesty piece, quarter length close bare shoulder sleeves, waist band, Empire waistline, close skirt, necklace, earrings, bracelets, wrap