On "Those Winter Sundays"
1. The family can’t afford to (or chooses not to) heat the house during the night; apparently their heat comes from a wood or coal stove. This doesn’t necessarily suggest poverty, maybe only frugality.
2. Because the speaker fears the “chronic angers” (line 9) of the house, they must come from the family’s interpersonal relationships. They could suggest petty quarreling or traumatic abuse. Readers don’t know if the child is the only one in the home who feels/fears those angers.