According to her Wikipedia article, Princess Louise had a very bad marriage to Prince Friedrich zu Schaumbug-Lippe that may have caused her to attempt suicide.
The photographer was Mary Steen Eneret. The jewels were enhanced after the photo was taken.
From Wikimedia; sepia tone removed. Also posted to Princess Louise Louise of Denmark’s (1875-1906)’s Subalbum here.
Louise’s dress in this 1895 card could be from almost any time in the 1890s or 1900s.
Keywords: 1895, Eneret, Princess Louise of Denmark, Princess Louise of Denmark (1875-1906), Louise Caroline Josephine Sophie Thyra Olga, Princess Friedrich zu Schaumbug-Lippe, Luise zu Schaumburg-Lippe, Glucksberg family, Schamburg-Lippe family, Princess, Danish, straight coiffure, hair jewelry, scoop neckline, lace bertha, lace sleeves, order bows, necklace, brooch, jeweled bodice ornament