Marinette has finally snapped. She lasted through Lila's lies, Akuma attacks, her friend's turning against her, and physical and emotional abuse, keeping on a cheery persona while dying on the inside. But this is her breaking point. Adrien has told her to "take the high road" and that "Lila's lies weren't hurting anyone", even though they were hurting her, mentally, emotionally, and physically and he knew that, so she was done. Done hiding her feelings. Done making herself small. Done with those who don't appreciate her.
It's time to make them see what happens when you make a kind girl... Cold Hearted