Ah Mow-Santos attended college at the University of Hawai"i from 1993-1996 where she was a two-time AVCA First Team all-American. As a setter, she helped Hawai"i to the 1996 National Collegiate Athletic Association Championship match, losing to Stanford. She attended Mckinley High School in Honolulu, Hawaii.
She is a setter on the United States of America national team and played at the 2000 Sydney Olympics, the 2004 Athens Olympics, and also played at the 2008 Beijing Olympics, helping Team United States of America to a silver medal. She now works as an assistant coach at the University of Hawaii Rainbow Wahine Volleyball Team. She started to do some international competition with the United States of America national team in 1999, setting in seven games at the NORCECA championships and playing in 13 sets at the World Cup.
In 2000, she played in four sets of the Nike Americas’ Volleyball Challenge, helping Team United States of America qualify for the 2000 Sydney Olympics.
She set the team to victories over northern 4 China, northern 5 of Korea and northern
7 Japan at the Grand Prix. At the 2000 Olympic Games, she started all seven matches and led the team to a.263 hitting percentage and a fourth-place finish.
In 2001, she earned Most Valuable Player honors at the World Championship Qualification Tournament and was also named the "Best Setter" at the NORCECA Zone Championships and played professionally for Castelo de Maia in Portugal.
At the 2004 Olympic Games in Athens, Greece, she was the starter and the team that finished tied for fifth overall after losing to Brazil in the quarterfinals. In her career, she has set for team United States of America at the World Grand Prix, the Pan American Cup, NORCECA, the Olympics, the FIVB world cup as well as numerous exhibition tours. More recently, she has set some matches for team United States of America in their 2008 exhibition pre-Olympic game matches.
Robyn made her third Olympic appearance at the 2008 Summer Olympics, helping Team United States of America to a silver medal.