1. The coffee caused her third degree burns because she was wearing sweatpants and the liquid stayed on her skin longer enough to produce them. So McDonalds was to blame for that?
I have no opinion on this case, but will point out that ideal coffee brewing temperature is around 92C. Any hotter and the coffee itself burns and goes bitter. 92C will cause burns if left in contact with the skin after just a few seconds.
Placing a liquid with the potential to scald in a precarious position cannot be blamed on the provider of the liquid unless the liquid is hotter than can be reasonably expected.
I suspect that te coffee was kept at a higher temperature (after brewing) and that there was a case for the woman to argue that she would have expected it too have cooled down to a reasonable level.
The question would therefore be, does McD serve coffee that is hotter than normal in Order to ensure that it remains warmer for longer?