[1][2] Hernandez began her sporting career as a BMX racer in international competition[1][3] before discovering snowboarding.

[3][4][5] As a result, she stopped sport and took refuge in writing, publishing two books for Éditions du Rocher and working for Europe 1 (from 2011) and Le Figaro from 2012, covering the 2012 Summer Paralympics in London.

In May 2012, Hernandez arranged an endurance race for both disabled and able-bodied athletes, travelling from Lyon to Bordeaux by bicycle and kayak.

[3] She won a silver Paralympic medal at Sochi, with a snowboard cross time of 2:07.31,[1] and was named a knight of the National Order of Merit by then-president François Hollande in June 2014.

[13] She won the silver medal in the women's dual banked slalom SB-LL1 event at the 2021 World Para Snow Sports Championships held in Lillehammer, Norway.