Click to enlarge.
Well, howtheduck totally called this. Yes, Elly, in her catatonic state, is thinking the reprints. This is an image I've had in my mind for more than a year--ending* FOOBAR with Elly catatonic, John wondering what she's thinking about, and the last panel showing Elly with that day's reprint in her thought bubble.
I of course didn't know what reprint would be running on that day. I think the one that this landed on is oddly appropriate. It seems to fit in with the theme of never having appreciated what she had when she had it. (Not that John was such a prize, but you know what I mean.)
*But I'm not quite ready to end--there will be some epiloguey goodness to follow.