[2] In 2002, she was on the USA Girls' Youth National Team that won a gold medal at the NORCECA championships in Salt Lake City, Utah, and she was named "best serve-receiver" for the tournament.

In 2004, she averaged 18.3 kills, 1.57 blocks and 2.0 aces per match for the Bruins, who were 25–7 and reached the CIF Southern Section Division I-AA semifinal.

In 2003, she was the youngest member on the USA women's national training team that earned a bronze medal at the 2003 Pan American Games in Santo Domingo, Dominican Republic.

She added 2.50 digs per set during the Pan American Games, and recorded 15 points against Argentina with 13 kills and two aces on June 21.

She provided four aces as part of 10-point match against Costa Rica on June 22, and averaged 3.06 points during the Pan American Games, including 2.69 kills and 0.25 blocks per set.

She turned in three double-figure point matches at Pan American Games, topped by a 12-point performance against Puerto Rico on July 15.

[5] Her long-time mentor Doug Woodburn was not able to make the journey to Japan with her, but she says he continues to give her inspiration with their daily video conferences.

[6] Cynthia was a leader of the national team that won the bronze medal at the 2011 Pan American Games held in Guadalajara, Mexico.