This is Sunlight in the Blue Room (1891, Skagens Museum) by Anna Ancher 1859-1935), a fine example of her use of colour and ability to capture the play of Skagen light in her domestic interiors. The full title explains it is her daughter Helga crocheting in a room in Brøndrums Hotel where her grandmother, Anna's mother, often sat. The Dulwich Picture Gallery is using this painting in the publicity for its Anna Ancher exhibition which opens on 4th November this year.