I should have said SURVIVAL Rate = ... So for her it ws 100-80-6 = 14%! I'm sure it's just a rough guide, but that's what I remember as a starting point.
I thought it was more than 6%. Did you know that the older you get, the worse a burn is? This woman was 80, I think. The formula is something like death%=100-age-burn%, so she was lucky to survive!