Waner suited up for USA Basketball on several occasions. In the summer of 2004, Waner competed at the Junior World Championship. She led the Junior World Championship Qualifying Team to a 5-0 record in Tunisia and started all five contests while averaging 12.0 points, 2.0 rebounds, 3.8 assists and 2.2 steals. Her next appearance for Team USA was in the summer of 2005 at the Under 19 World Championship. She started all eight games as the US went 8-0 record and won the second gold medal in six attempts for the U19 team. Statistically, she averaged 8.9 points, 3.0 assists, 2.0 rebounds and hit 40.6 percent of her three-pointers. At the Under 21 World Championship in the Summer of 2007, she led the team to an 8-0 record and the gold medal in Moscow, Russia. This time, she started two of eight contests, while averaging 5.9 points, 2.4 rebounds, 1.4 assists and 1.1 steals in 18.5 minutes a contest.
