Thank you. I had ruled out those two death registrations because Elizabeth was listed as 77 in the 1911 census (which corresponded pretty well, within a year, of previous years’ censuses), because I thought a six-year error was a bit much, but perhaps those are worth looking as, as you say.
In looking at the notes, I’m reminded that Elizabeth had a twin brother William, so looking at him could also provide clues.
I’m trying to be careful to have the correct family—in another branch of my family in the Campbeltown area, there were two Neil Munros, each of which married a McNeill and each had a daughter Helen only two years apart, only one of which, of course, was my 3GG. It was very easy to get them mixed up, and that experience caused me to be much, much more careful to be sure I haven’t made a skip across branches.
Thank you again!