An unaccompanied minor becomes distressed after a diversion. How would you respond?

If an unaccompanied minor became distressed after a diversion, I would slow the moment down and speak in a calm, age-appropriate way. I would move to a quieter interaction if possible, explain simply what happened, and tell them what the next step is so the situation feels less unknown.

I would not overload them with operational details. I would say something like, "We had to land at a different airport, but you are safe, and we are going to help you through the next step." Then I would check whether they need water, a snack, a restroom break, or just a calm presence for a few minutes.