At the 2010 South American Under-23 Championships in Athletics, she won a silver medal in the Women's 400m hurdles event, and also won two golds in the same event at the 2008 and 2011 South American Junior Championships in Athletics. Rodríguez also won bronze at the 2011 Pan American Junior Athletics Championships. She competed in the Women's 400m hurdles event at the 2012 Summer Olympics but ranked 28th and was eliminated in the first round even though she broke the national Women's 400m hurdles record (57.04 seconds), which Rodríguez previously held in 2011 with 58.63. She also holds the national record at 400 metres-52.53 and 800 metres-2:01.46.