The phrase "made a scene" implies that someone has behaved in a way that draws attention to themselves in a negative way. So, the antonyms for this phrase would be any phrases that describe behaving in a calm, dignified manner that avoids drawing attention to oneself. Some examples of these antonyms might include "maintained composure," "kept a low profile," "acted discreetly," or "refrained from causing a disturbance." Essentially, any phrase that describes acting sensibly, with grace and decorum, would be an antonym for the phrase "made a scene.