What expression did Kim have after the party?

The expression that Kim had after the party being described as triumphant indicates a sense of victory or achievement. This suggests that Kim felt a sense of pride or satisfaction, possibly because the party went well or because she accomplished something significant during the event.

Triumph is often associated with positive emotions that arise when someone feels successful or has overcome challenges. This could relate to social interactions, personal goals, or any achievements realized in the course of the party. In literature and storytelling, a triumphant expression often reflects a turning point or a successful outcome that resonates with the character's desires or hopes.

In contrast, the other options suggest various negative or neutral emotional states that do not align with the idea of feeling victorious or accomplished. Disappointment would imply unfulfilled expectations, confusion indicates a lack of understanding about events, and anger suggests frustration or upset. All these emotions contrast with a sense of triumphant achievement, and thus, do not accurately describe Kim's expression after the party.