Even though it is pretty gross to be in your barefeet in a public place like that, I'm thinking she just stepped out of the car for a phone call...doesn't look like she is going anywhere.
It does appear that she is either picking her nose...which we all do, we just don't have to worry about someone snapping a pic of it.
I, too, think she looks wonderful. She does give inspiration for those of us who are aging at a rapid pace!