My gut feeling is that the enormous older one and the chubby younger one are not getting along. I think physical fights led to the gigantic one being sent away somewhere. Now she looks pissed off. Nice purple shoes with no laces. They are so trashy looking. I’m sorry, but they are.
Those poor kids never look happy, always looking down. I think Malia is probably just mad because her sister got to go on all those other vacations while she had to be at camp. And she’s gonna make sure everybody knows it! She is kind of at that age, too.