Dear Mary: How do I train my husband not to shout for me from far-flung rooms?

Q. My former cleaner has now retired and lives nearby. I visit her with clockwork regularity and always enjoy seeing her, but the problem is that although we may have just been chatting and laughing or sitting in companionable silence, as soon as I say I must go, she chooses that moment to open a sort of conversational Pandora’s Box, e.g.