She became Belgian champion in 1992, 1993, 1996, 1997, 1999, 2001, 2004, 2006, 2007 and 2008. Her main domestic competitor was Natalja Jonckheere, before Tia Hellebaut took over the hegemony.[4] De Leeuw also became French champion in 1998 and 2000.[5] Her personal best jump is 1.9 metres (6 ft 3 in), achieved in August 1993 in Sheffield.[1]