The kids being there, could be nothing more than- the fact that they were passengers on an aircraft that had mechanical problems, and... another mitigating fact that their dad happens to be running for POTUS, using that airplane, and the trip to the governor’s mansion was expedient to the breakdown’s location, because Pence then, could get the word regarding the VP pick, face to face, and the kids/advisors were either there acting in their official capacity, doing whatever it is they do, or they were there because their dad is running for POTUS and it was in part, business as usual- meaning a little bit like a family event/trip. The a/c breakdown MAY be a ruse. I see some brinksmanship playing out most excellently.
Your guess is as good as mine.
The Pence kids were there for breakfast too. At least daughters were. Michael is a marine. He a PU graduate and a pilot. Family is very important to Pence just as it is go Trump. It will be the deciding factor. Expect the Pence kids to join the Trump in campaigning. Charli the oldest daughter has an Emmy for her documentary FLEECED. She might film the entire thing as that is her expertise.