One of the rare cases where wasa is not the root of the problem, but look at that face, didn't show any remorse or sympathy toward the sister, maybe it's the smart one that knew her sister deserved all of this.
LOL, who am I joking with? It's a wasa, there is no way she knew all of this. I am pretty sure that she think: "why parents dont let me eat food yet? What shitty parents"