What is death by grief?

[daisymew]

I died once of it as an no name Eve.
In another life I saw later that my daughter died of it and she was named and was already 15 years old.

[WumboJumbo]

Death by grief is part of the most recent update.

Upcoming new game mechanics / 新しいゲームのメカニック

Baby Abandoning Consequences
When a child dies before it’s 3 years old, its mother will become so sad that she loses 5 food. If it happens a second time to the same mother (in the same life), she will lose 10 food, then 15, 20, …
This change is supposed to discourage mothers from abandoning their babies. It’s also realistic that a mother would become weak with grief when losing a child…

[daisymew]

Makes sense now but we should be able to do something about children who run off, got 3 kids in one life that just ran the second they were born.