Rubuta ci gaba don wannan sakin layi - A ƙarshen shekara ta 2005 ta ji sha'awar komawa wasan motsa jiki, ta daidaita horo da kuma kula da ɗanta. Rashin nasara ga Nataliya Tobias a gasar zakarun kasa ta 2006 ya karfafa mata gwiwa don sake fara sana'arta kuma ta fara horo tare da Iryna Lishchynska. Ta yi farin ciki da ingantaccen lokutan ta amma ta sha wahala daga fitowar da ta yi a wasan kusa da na karshe a gasar zakarun Turai ta 2007. Lokacin wasan waje a 2007 ya tabbatar da zama juyi; ta dauki lambar azurfa a gasar cin kofin Turai ta 2007
kuma ya kafa sabon tarihi a tsayin mita 400 da 800. Ta yi tseren mita 800 a karkashin minti biyu a karon farko a gasar zakarun kasa, inda ta yi nasara a cikin dakika 1.59.60. Ƙarin ci gaba ya zo ba da daɗewa ba a 2007 Summer Universiade inda ta lashe lambar zinare, ta kafa lokaci mafi kyau a duniya na 1.57.63 seconds. Matsin lamba don yin gasa a Gasar Cin Kofin Duniya ta 2007 a matsayin jagora a duniya ya tabbatar da yawa ga Krevsun, kuma an fitar da ita a cikin zafin jiki tare da ƙasa da minti 2.02.45. Koyaya, a ƙarshen kakar wasan har yanzu ita ce ta biyar mafi sauri a cikin 'yan wasan mita 800 a wannan shekarar.