Kammala wannan jumla: Mitchell ya zama mai cancantar shekaru don babban gasar kasa da kasa a 2007. A gasar zakarun Australiya, ta lashe lambar zinare a kan ma'aunin ma'auni. Daga nan ta yi gasa a WOGA Classic a Plano, Texas kuma ta taimaka wa ƙungiyar Ostiraliya ta lashe lambar tagulla. Kowane mutum, Mitchell ya sanya na huɗu a cikin duka, ya daidaita don lambar azurfa a kan ma'aunin ma'auni tare da Katelyn Mohr, kuma ya daidaita don lambar tagulla a kan motsa jiki tare da Alina Kozich. Ta yi gasa a
Gasar Zakarun Duniya tare da Daria Joura, Shona Morgan, Hollie Dykes, da Chloe Sims, kuma sun gama na goma sha ɗaya a zagaye na cancanta. Mitchell ta cancanci zuwa wasan karshe na wasan daidaitawa, inda ta kasance ta biyar.