Rubuta ci gaba don wannan sakin layi - Van Rooijen ta fara wasan farko na kasa da kasa a gasar zakarun Turai ta LC 1999 a Istanbul, Turkiyya tare da wurare na 4 a duka 4 × 100 m freestyle da 4 × 100 m medley relay. Bayan shekara guda sai ta sake farawa a gasar zakarun Turai LC
wannan lokacin ya faru ne a Helsinki, Finland. A can ta fara daban-daban a cikin mita 100 da 200 m freestyle ƙare 17th da 24th. A cikin 4 × 200 m freestyle relay akwai wani 7th wuri. A watan Satumbar 2000 ta yi gasa a wasannin Olympics na Sydney inda ta lashe lambar azurfa a tseren tseren mita 4 × 100 tare da Inge de Bruijn, Wilma van Hofwegen da Thamar Henneken. Akwai kuma wuri na 11 a cikin 4 × 200 m freestyle.