Tuhi i te haere tonu mo tenei irava - Ko te 2005 ehara i te mea whakamiharo mo Groot me te 4th i roto i te 4 × 100 m freestyle me te 9th i te 50 m butterfly i te 2005 World Aquatics Championships i Montreal, Quebec, Canada. I te mutunga o te tau ka wini ia i te mētara koura mo te wa tuatoru i te rarangi i te 4 × 50 m freestyle i te European Short Course Swimming Championships 2005. I tiimata te 2006 me te 2006 FINA Short Course World Championships i Shanghai. I te taha o Inge Dekker, Hinkelien Schreuder me Marleen Veldhuis, i whakatauhia e Groot he rekoata o te ao ka wikitoria i te mētara koura i te 4 × 100 m relay freestyle i roto i te waa 3: 33.32. I te raumati i uru ia ki te 2006 European Aquatics Championships
i Budapest, Hungary i reira i taapirihia e ia he mētara hiriwa, i te 4 × 100 m freestyle me Dekker, Veldhuis me Ranomi Kromowidjojo, me te mētara parahi, mo te wha o nga wa i roto i tana umanga, i te 50 m butterfly ki tana kohinga whakamiharo o nga mētara. I Helsinki, i wini ia i te mētara hiriwa i te 4 × 50 m freestyle i te European Short Course Swimming Championships 2006. Ko tana whakataetae nui e whai ake nei ko te 2007 World Aquatics Championships i Melbourne, Ahitereiria i reira i kaukau atu ai ia i te roopu 4 × 100 m freestyle na tana hoa kapa a Femke Heemskerk i a ia e noho ana hei mema o te roopu i nga whiringa toa mo nga tau maha. I mutu ia i te 13th me te 20th i te 50 m me te 100 m butterfly ka waiho hei whakataetae pouri mo Groot. Ko te tuarima o nga waahi i te European Short Course Swimming Championships 2007 ko tana hua pai mo te tau pouri.