Three things
Here are 3
Pick one. Each takes about as long as it says.
Talk to the one who married in
Every family gathering has somebody who knows none of the stories, and everybody is assuming somebody else is talking to them.
Half an hourFreeA relative
Ask now what they would want
Where they want to be, who decides, what they would refuse. Asked over tea it is a conversation. Asked in a corridor it is a crisis.
Half an hourFreeA relative
Write down how their house actually works
Which tap drips, where the stopcock is, who fixes the boiler. One page, on the fridge, for whoever needs it next.
Half an hourFreeA relative