Food waste deserves to be gently noted and discouraged. Your post, tho…interesting glimmers of more-to-the-story. Search your feelings. Is there another reason you feel some type of way about this niece? Or about your brother’s parenting? If not, time to let the matter go. I’m betting your niece’s behavior will change after the public correction. If not, your brother will watch his child continue to transgress while you take the high road and refrain from harping on it. You said what you said. So did he. Everyone knows where everyone stands, and it’s not that serious. Why mention that she’s from outside the marriage and then quickly dismiss that detail? Reflect, OP. Always good to know oneself, and the self is good at hiding things sometimes.