In 2000, she competed in the 2000 FINA Short Course World Championships in Athens where an 11th place in the 50 m butterfly was her best result. At the 2000 European Aquatics Championships in Helsinki she was in the finals of all three relay events but did not won a medal. Individually a 7th place in the 100 m butterfly was her best performance. Groot was also selected to take part in the 2000 Summer Olympics in Sydney. She swam in the heats of the 4×100 m freestyle but was replaced for the final by Inge de Bruijn, but still received a silver medal for her efforts in the heats. Individually she reached the semi-finals of the 100 m butterfly ending up 11th. In the two other relays there was no success.