In addition, look at how Lili is walking, it's the stomp walk of a child who's angry. She does have her head down and at one point, she turns her head to the right just enough that she can see Meghan following her. Then she pulls both her arms close to her in the jerk motion. Lili may be 4, but she's furious with Meghan and at being ordered to parade around.
As Archie and Lili get older, both are going to rebel big time against their parents and it won't be pretty.