Understanding Maria's Feelings Before Her Presentation

Read the following passage:

Despite being well-prepared for the presentation, Maria felt a wave of anxiety wash over her as she stepped onto the stage. She paused for a moment, taking a deep breath to calm her nerves. Calming activities can help individuals manage anxiety in stressful situations, allowing them to perform to the best of their abilities.

What does the passage imply about Maria's feelings before her presentation?