The parent who worked late and still asked about your day was choosing you on empty.

Asking a question after a long shift is not a small thing when there is nothing left in the tank. The easy version is to come in, say little, and disappear until morning. Choosing the harder version while exhausted is a decision made in private, with no credit attached. It tends to be read as the minimum rather than as an effort.

Answer it properly tonight, with more than one word. Ask about their day as well, which is probably rarer than you would guess. A minute of actual conversation is the only thing that pays that back.