Her article in thepeerage is here.
Coiffures became more elaborate in the 1870s. Her dress has a neckline framed with lace. The portrait appears to be damaged.
Keywords: 1875, Easton - Reginald, Lucy Marion Hardy, Gladstone family, Hardy family, straight coiffure, vee neckline, collar, lace, close sleeves, jeweled neck band, necklace, earrings, brooch, wrap