Indergaard, a native of Johannesburg, South Africa, started her sporting career as a gymnast at the very young age until she took up diving in 1992. She achieved her early success by winning the gold medal for diving as a demonstration sport at the 1995 All-Africa Games in Harare, Zimbabwe, and represented South Africa at the 1998 Commonwealth Games in Kuala Lumpur, Malaysia, where she met British-born Adrian Hinchliffe, who later served as her personal coach. In 2000, Indergaard graduated from the University of the Witwatersrand, with a degree in physical education. She was also selected for South Africa to compete at the 2000 Summer Olympics in Sydney, but the South African Olympic Committee had decided not to send her.