Her article in thepeerage is here.
From the Christie's Web site; size fixed at 27.83 cm high at 28.35 pixels/cm.
Lady Campbell is dressed very casually. possibly with a robe or wrap worn over a lace chemise. However her hair is set in a high coiffure.
Keywords: Gainsborough, Mary Meredith, Lady Frederick Campbell, Countess Ferrers, Meredith family, Campbell family, high straight coiffure, headdress, chemise, lace, sweetheart neckline, robe, bracelets