Originally Posted By: Lono
Its hardly definitive but this evening news account has more detail in it than the Seattle Times article or the speculation here. http://www.kirotv.com/news/25536602/detail.html

From that article, "Manko has frostbite on her legs and feet and suffered from hypothermia, but her family said she survived because of her mental toughness and by thinking of hope and happiness."

It sounds like her mind and mental toughness saved her life. I've been reading "SAS Surival Handbook" by John Wiseman. He says that lack of mental toughness is what does most people in (paraphrase).
If you're reading this, it's too late.