Grings made her debut for the Germany national team in May 1996 against Finland. She appeared for Germany at the 1999 FIFA Women's World Cup, scoring three goals. However, Germany was eliminated in the quarter-final. At the 2000 Summer Olympics, she won the bronze medal with the German team, scoring once against Australia in the group stage. Grings' career, particularly at international level, has repeatedly been affected by injuries. She missed the 2001 European Championship on home soil and the 2003 FIFA Women's World Cup due to injury. When she tore the anterior cruciate ligament in her knee shortly before the 2004 Summer Olympics, Grings initially announce to end her career. However, she changed her mind during physical therapy.