You know that feeling when you're 50, you've just rebuilt your whole life, and then you miss a call? A critical one, I mean. For your mother, who's not well, and you're stuck in a truck somewhere west of Kansas, still pushing the miles because this is IT — this is how you make it work now. And you just... you just can't get back. It's a kind of anticipatory grief, I think, maybe mixed with a healthy dose of regret. I don't know if that counts.