I don’t know if you saw the Palin Alaska series but I laughed out loud when Piper said “No.” to her mother’s inquiry about her walking Kate and her 8 to the departing sea plane (it was just too too much rain and roughing it for Kate). Piper’s face in the picture you posted was about the way she conveyed her feelings about being asked to be “nice” to Kate.
I want to see that little kid grow up in the White House.