She wrote Sixty-nine Years at the Court of Prussia. She was involved in the wedding of Queen Luise of Prussia. Her German Wikipedia article is here.
From Wikimedia.
Sophie Marie is dressed with big panniers and otherwise masculine military-style attire, but with some glitter, to go hunting in her 1748 Pesne portrait.
Keywords: 1748, Pesne, Sophie Marie von Voss, Countess, German, curly coiffure, tricorne hat, scarf, square neckline, modesty piece, jacket, frogging, buttons, three quarter length notched close over-sleeves, long under-sleeves, cuffs, lace, vee waistline, panniers, neck band, hunting dress