You know how sometimes you get so violently angry about something that you just kind of throw your hands up in the air and shake your fists at nothing in particular? Yeah, that.
Then lunch time will come, but you won't feel like eating. You will instead feel like turning off all the lights and burying your face in a pillow for an hour, not for a real nap, but just to turn everything off.
I had always imagined that if one of my parents' health was failing, it would be such a long, drawn-out process that I would have time to get home to them, to say goodbye. But my dad had died and I hadn't even seen him in four months.