Somehow I think this "old dear" is indeed quite a smart cookie.
Yes, Notams blah, blah but I'm guessing that this is a regular area for her to fly in and if there was some big flying event with lot's of a/c, she'd know all about it. This was just the Prez havin' a party and "THEY" deciding that a large chunk of Chicago airspace should be shut down because of it.
As they no doubt struggled to keep their F16's on their tails to escort the little Kitfox, I hope the pilots were p*****g themselves laughing.