well, if that same eskimo woman thought her own death wasn’t enough to stretch the food supply out long enough for the rest, she might also take a small child with her, or a sick one...I’m guessing. I never read this I’m only hypothesizing that it seems logical.
So now in this example, wouldn’t the mother be guilty of deciding who should live and who should die? I don’t have kids btw. This is purely a hypothetical for me.
I don't think "deciding who should live and who should die" applies to oneself. It's interesting to observe, in the case you mentioned, that the person doing the sacrificing is trying to let fate intervene, rather than committing an overt act of suicide.