It would be ten points if he specifically mentioned that Elly had a friend who had died. But you still get credit!
As for the last two panels, we've been over this before. Many times. Elly has never been comfortable with whatever age she is. She has always claimed to feel younger (while griping like a yenta), and this is not the first time Ol' Potato Nose has mentioned scoping out a guy and then realizing he's Mike's age. IANAPsychologist, but I'm under the impression that people who regret their lost youth weren't happy even when they were young. So what's really bothering them is realizing that time didn't heal their wounds, and maybe wishing they could go back and do things differently.
Check out Jim's wattle in panel 4! And these young chicks who are 50: are they the ones that he signs their---IRIS!
Also, go easy on that tea, Grampa. You know it goes right through you!