The very specific situation I'm looking at right now involves a group of three of my main characters (T, F, and A). A and F are keeping an old woman busy while T is treating her husband ofan illness). I'm trying to figure out how A and F would address the old woman politely (so "Old Lady!" is pretty much out.) But I'm guessing I'll need this more often This feels like something I ought to know (well, for medieval European-style fantasy, anyway), and have probably seen in books before, but I'm completely blanking out now.
I've tried Googling and looking through wikipedia, but all I can find are imperial and noble titles.
Thanks in advance for the help!