Kana sighs in frustration. Did she have to support or make herself stand out in this scene?

Would it make the others look good or bad? Why did she have to downgrade her acting?.. It was frustrating, good thing it was only practice. Her nose was scrunched up as she huffed in annoyance. It looks like she'd have to fit her acting with the others.

"Hey..do you think I need to support the others during this scene?.."