She was part of the Montenegro international set-up since the younger age categories and won the bronze medal at the 2010 Junior World Championship. She made her championship debut in the 2010 European Women's Handball Championship. A year later she participated at the 2011 World Women's Handball Championship in Brazil. In 2012, she participated in the 2012 Olympic Games in London where she was a silver medalist after Montenegro lost the final match against Norway 26–23. Later in 2012 she became a European Champion with Montenegro when they took revenge against Norway in the final at the 2012 European Women's Handball Championship, winning the final 34–31 after overtime. Knežević scored 10 goals in the final game and a total of 41 in the championship. She later was part of the Montenegrin teams during the 2013 World Women's Handball Championship, 2014 European Women's Handball Championship, 2015 World Women's Handball Championship, 2016 Olympic Games and the 2016 European Women's Handball Championship. Raičević was named captain of the Montenegrin national team in 2016.