Her Wikipedia article is here.
From europeana.eu/portal/en/record/2048007/Athena_Plus_ProvidedCHO_Skoklosters_slott_23281.html; size doubled. Also posted to the Revolutionary, Napoléonic, and Regency Era Album here.
The full skirts of the period around 1830 and later do not appear to be in style in this portrait.
Keywords: 1828, Lindberg, Aurora Wilhelmina Koskull, Aurora Wilhelmina Brahe, Koskull family, Brahe family, Countess, Swedish. Lady-in-Waiting, Frederica of Baden, curly coiffure, jeweled turban, bows, earrings, necklace, Empire bodice, modesty piece, quarter length full sleeves, waist band, Empire low waistline