alannah hill broke her foot after shooing her dog and hitting skirting board .
doctor noticed a freckle on her foot and she was diagnosed with cancer .
another three months it would likely have spread and become terminal .
hill has had part of her toe removed and a skin graft from her inner thigh .
she prides herself on her alabaster skin - even going to the extremes of wearing gloves and using a parasol to protect her from the sun .