4 ideas
Hunger turns him irritable and grudging over bread shares, and he snaps at her. After she dies he replays each small cruelty and cannot separate pity from resentment. The episode shows starvation corroding care from inside the caregiver, not only through outside scarcity.
Under blockade each day becomes a closed loop: fetching water, standing in queues, collecting rations, heating the stove and eating use up all the energy they are meant to restore. The person keeps moving but gets nowhere, because every act only makes the next day's identical acts possible. The only exit is an act whose meaning lies outside survival, such as writing, which turns lost time into something that lasts.
Besieged people constantly narrate their own behaviour to others and to themselves: in queues, at table and in stories of hardship. The narration is not mainly about sharing information. Its job is to protect a tolerable self-image against the evidence of what hunger is making them do. Speech becomes a defence mechanism that turns degrading acts into acceptable or even heroic ones.
Treat hunger as a force that reorganizes consciousness, not just a bodily want. Starving people cut bread into tiny pieces, stretch out meals, and talk obsessively about pre-war dishes and recipes. These rituals stand in for the missing satisfaction, and the mind rebuilds itself around the body's deficit.