Her name was Nadezhda Dmitrievna Beloselsky-Belozersky, née Skobeleva. She was married to Constantine Esperovich Beloselsky-Belozersky whose Wikipedia article is here.
From eBay.
This photo shows a little sleeve padding before the late 1880s if the date 27 March 1876 is correct.
Keywords: 1876, Adèle, Nadezhda Dmitrievna Beloselsky-Belozersky, Skobeleva family, Beloselsky-Belozersky family, Princess, straight coiffure, bun, chemisette, high neckline, ruff, long under-sleeves, cuffs, jacket bodice, long close over-sleeves, earrings