She then took part in the world cup in the FIVB World Cup when the Dominican Republic was assigned with a wild card. Her country ranked ninth after winning only three matches during the competition. In the second half of December, Castillo played in Monterrey, Mexico the NORCECA Olympic Qualification Tournament; but her team fell 0–3 to Canada in the semifinals getting out of contention for the Olympic berth and later 2–3 to Puerto Rico in the Bronze medal match.