Overview
The last thing you need to be is a bit player in someone else's life today -- so if a drama erupts, just step back and let them handle the mess on their own. You didn't create their mess, so you shouldn't have to help tidy it up. And if they ask directly for your help, you should easily be able to find a diplomatic way to extricate yourself from the situation. Maybe your workload is too heavy? You have relatives visiting? You suddenly got transferred to Shanghai? Stay out of things today.