Born in Songo – La Maya, Santiago de Cuba, Ribeaux started out in the javelin throw as a teenager, clearing fifty metres for the first time in 2005 and setting a best of 55.34 m a year later. She established herself at the national level in 2009 when she improved her best by more than five metres to win at the Barrientos Memorial. Her mark of 61.72 m was enough to defeat former Olympic champion Osleidys Menéndez. She threw the javelin 63.18 m later that season and was the gold medallist at the 2009 Central American and Caribbean Championships in Athletics ahead of perennial champion Laverne Eve. She was elected to compete at the 2009 World Championships in Athletics but did not progress beyond the qualifying round.