I read once that the eskimo women would sometimes leave the igloo and sit in a windstorm until dead. If they thought there wasnt’ enough food for everyone to survive until spring, they would do this in hopes that their children would then be able to eat until spring and survive.
that’s deciding who should live and who should die.
And it seems natural that a woman would die for her child, but not so natural that a woman would kill her child for her own sake.