Eugénie (1830-1889), Princess of Sweden and Norway Nils Blommér (1816-1853)

The picture has something of this: people, woman, portrait, wear, girl, brunette, dress, facial expression, model, fashion, beautiful, sit, hair, fashionable, face, retro, indoors, music.
Perhaps it’s a painting of a woman in a white dress with a pink sash around her neck and a purple shawl.