She took the bronze medals in 1500 and 3000 metres at the 1992 African Championships, and a 1500 silver and 3000 gold at the 1993 African Championships. She was selected as Africa's representative in 1500 metres at the 1992 World Cup, and finished fifth there. In 1993 she ran in the heats at the World Championships, both 1500 and 3000 metres. The next year she won a 1500 metres bronze medal at the 1994 Commonwealth Games. She also placed lowly at the 1993, 1995 and 1996 World Cross Country Championships. However, in the team competition, South Africa places as high as fourth in 1993; Griffiths was the fourth runner behind Zola Pieterse, Elana Meyer and Colleen de Reuck.