Born in Uccle to Belgian father Michel and Mauritian mother Jacqueline, Darche spent her first three years of life in Mauritius. Her family then moved to Spain for ten years and to Belgium for the next five, where she would enjoy visiting her grandmother Rachelle in Jodoigne.
Darche speaks French, Spanish, English, Flemish and Mauritian Creole. She started her modeling career at age 16 and participated in Elite Model Look Mauritius 2009, where she obtained the Prix spécial du jury and finished second overall.
Prior to competing in Miss Mauritius, Darche was pursuing a bachelor's degree in sociology and economics at Paris-Sorbonne University and worked as a model doing photo shoots in France.
Darche, who stands 1.75 m (5 ft 9 in) tall, competed as one of 14 finalists in her country's national beauty pageant, Miss Mauritius, held on September 25, 2010 in Bel Ombre, where she became the eventual winner of the title, gaining the right to represent Mauritius in Miss Universe 2011 and Miss World 2011.