samantha giufre , 19 , endured the horrific attack last september .
was dragged behind a car and left in a gutter in casula , south-west sydney .
ms giufre spent months in hospital and now has permanent injuries .
has lost vision in one eye , hearing in one ear , and smell in one nostril .
one man has been charged over the violent incident .
police are still searching for others believed to be involved .