She first made the U.S. women's national under-18 team for the 2010 IIHF World Women's U18 Championship where the team won the silver medal. The next year, Picard was named the team captain of the gold medal-winning U.S. U18 team in the 2011 Championship. Later that year, she made her first appearance with the senior team at the 2011 4 Nations Cup. She was a member of the United States women's national ice hockey team in five IIHF Women's World Championships from 2012 to 2019, as well as the 2014 Sochi Winter Olympics.