Best Digger award at the first 2012 U23 Pan-American Cup, played in Callao, Peru. In early November 2012, Castillo signed with the Azerbaijani club Rabita Baku to play the Azerbaijan Super League and the CEV Champions League. Her goal was to achieve the league championship, even when she was playing without any knowledge of the Azerbaijani language. 2013 As one of the 15 women awarded by the Dominican Republic Olympic Committee in her sport, Castillo won the 2012 Volleyball Player of the Year. Castillo was one of the candidates for the top prize, the Dominican Republic Athlete of the year, along with Félix Sánchez, Luguelín Santos, Yamilet Peña and Aumi Guerra. Castillo was also considered by the volleyball portal Volleyball.it among the candidates for the 2012 Globe Awards prize. She managed to survive Brazilian Fabiana de Oliveira in the semifinal round, but she lost the final round to Italian Enrica Merlo 55% to 45%. Castillo played the 2012-13 CEV Champions League Final Four held in Istanbul, Turkey. Her team defeated the Italian club Unendo Busto Arsizio 3–2 in the semifinals, but lost 3–0 in the championship match to the Turkish VakıfBank. In April, Castillo's club, Rabita Baku claimed the Azerbaijan Super League Championship ahead of Igtisadchi Baku and Azerrail Baku, three weeks before the end of the season to win their sixth title in a row. She won the league's Best Libero award. She then played the 28th Montreux Volley Masters held in Montreux, Switzerland, after the invitation received by her National Team for the first time since 2003. Castillo's team won the Bronze Medal defeating Italy 3-1 after dropping the semifinals 0-3 from Brazil. Soon after this tournament, the Dominican Republic National Federation announced the Castillo's separation from the National Team due to erratic behavior and indiscipline. She would later apologize for her previous behavior and promised to change her attitude, being then readmitted in the national team just in time to take part in the 2013 FIVB World Grand Prix. She helped her team to reach the 10th position in the competition, posting a 3.69 digs per set average, topping all the diggers in the preliminary round. Castillo played in late September the NORCECA Continental Championship, winning the silver medal and the Best Digger award. Castillo played with her national team at the U23 World Championship, helping her team to win its pool with a 4–1 record. They