Would humour can help in situations like these? Could you listen patiently, then smile politely, and ask, " And what else is going on in your world besides the wedding?"
She may be a little non-plussed and may or may not get the message but at least try to be subtle rather than hurtful. You can but try.
Adult offspring harbouring resentments
What "back then" inconvenience would annoy today's youngsters?

or maybe my life and family are just not as interesting as theirs? The other annoying thing is that when I finally get their attention I start gabbling, as I know I only have a few seconds before they will start talking about themselves again!
