Rubuta ci gaba don wannan sakin layi - Hardcastle da farko ta yi ritaya daga gasar yin iyo a 1986 yana da shekaru 17; a cikin wata hira ta 2012 ta ce bayan shekaru na horo ta so ta sami rayuwar matasa ta yau da kullun. Bayan da ta yi aiki a matsayin sakatare a Ford, ta yanke shawarar komawa wasan a 1992 kuma ta sake komawa gasar a 1993. Hardcastle ya kasance memba ne na ƙungiyoyin relay waɗanda suka sami tagulla a tseren 4 × 200-mita mai kyauta a gasar zakarun Turai ta 1993
da azurfa a Wasannin Commonwealth na 1994, inda ta kuma lashe lambar tagulla a tseren mita 400. A cikin 1995 ta lashe lambar zinare ta 800m da tagulla a cikin 400m freestyle a Gasar Gasar Duniya ta Short Course. A Wasannin Olympics na 1996 a Atlanta ta kai wasan karshe na mita 800 na 'yanci, ta gama na takwas.