Identifying the Climax in Maria's Performance

Read the following excerpt from a fictional narrative:

After months of preparation, Maria stepped onto the stage, her heart racing as bright lights blinded her. The audience sat in rapt anticipation, a mix of friends and strangers ready to witness her moment of triumph. As the first note rang out, she felt a surge of energy, but the unexpected sound of a microphone feedback made her falter briefly. She quickly regained her composure and continued, pushing through her nerves. Each note was a reflection of the hard work and sacrifice she had endured to get here. With every chord, she felt herself transforming, the music consuming her.

In the context of the excerpt, which aspect of the plot structure is most significant in conveying Maria's journey?