Inspite of being a great success at the ball Mathilde could not enjoy her success for long why was it?

Despite her success at the ball, Mathilde could not enjoy it for long because she lost the borrowed necklace that had adorned her during the event. This loss plunged her into a deep despair, as she and her husband had to spend the next ten years working tirelessly to repay the debt incurred to replace it. Ultimately, this experience led to a harsh realization about her life and aspirations, overshadowing the fleeting joy of the ball.