Kammala jumla mai zuwa: Ta taka leda a babbar kungiyar 'yan wasan kasa a gasar wasannin Olympics ta 2008 a Japan. A can ƙungiyar ta ƙare a matsayi na huɗu, kuma ba ta cancanci shiga gasar Olympics ta bazara ta 2008 ba. Daga nan ta buga wasa a watan Yuli tare da National Junior Team, inda ta lashe lambar azurfa a gasar NORCECA Junior Continental Championship U-20 ta 2008, kuma an zabe ta a matsayin Mafi kyawun Mai Kyau, Mafi Kyawun Libero, Mafi Kyawun Digger da Mafi Kyawun Mai Karɓa. Ba da daɗewa ba bayan haka Castillo ta yi ikirarin tare da Babban Team dinta lambar zinare a gasar
Kofin kwallon raga na mata na Pan-American na 2008 a Mexico a lokacin da take 'yar shekara goma sha shida. Daga baya a wannan shekarar tawagarta ta lashe lambar azurfa a gasar cin kofin Final Four, yayin da ta lashe kyautar "Rising Star".