Her Wikipedia article is here.
From kokoelmat.fng.fi/app?si=S+45; spots and flaws removed with Photoshop. Also posted to the Reign of Louis XV - 1715 to 1774 Album here.
Young Maria Charlotte Cedercreutz is bundled up in a fur-trimmed velvet over-garment and muff in this Streng portrait.
Keywords: Streng, Maria Charlotta Cedercreutz, Maria Charlotta Wrangel, Baroness, Swedish, Lady-in-Waiting, Queen Sophia Magdalena, wavy coiffure, floral headdress, bodice, high neckline, lace neck ruff, fur-trimmed cape, bows, muff