Em disappears

Sam's body is dragged outside and left.

Broken by grief, Em turns on the boys. She blames them, rejects them, and walks away with bandaged feet into the desert at night.

Elliot tries to reach her, but she is already gone in every way that matters.

This image should hurt. Their mother is alive, but the boys are orphaned anyway. It is not death that abandons them here — it is despair.