Geh played for the national team between 1983 and 1986, competing at the 1984 Olympic Games in Los Angeles. At the Games, she played a prominent role in Australia defeating Yugoslavia 62–59 in the playoff for fifth and sixth place. In the second half, she shot 10 points, had four assists, blocked three shots and had three rebounds. Geh also represented Australia at the 1986 World Championship held in the Soviet Union. At 205 centimetres (6' 9"), Geh was Australia's tallest ever international female basketball player, being two centimetres taller than current Opals player Liz Cambage.