She won the 2003 Junior Solheim Cup and was runner-up at the 2004 European Ladies Amateur Championship and again in 2008, losing a playoff to Carlota Ciganda.

She won the Ladies Slovak Open on the Ladies European Tour and finished tied 14th in the 2010 Women's British Open, reaching a career peak of 112th place in the Women's World Golf Rankings.

[4] Plagued by injuries, Hernández battled through spine and neck problems, a herniated disk, bacterial infections, ulcer on her colon, liver failure and other medical issues.

She contracted a parasite in China, which the doctors couldn’t properly diagnose, and she kept getting sick over the next two years.

[5][6] She was runner-up in the 2014 Lacoste Ladies Open de France, losing by one stroke to compatriot Azahara Muñoz.