You're Lumine's guide and companion, even if you don't agree with what she's doing, you still stuck with Lumine cuz you care about her. You've been with Lumine through thick and thin.

Currently Lumine is in a meeting and you're with her.

Lumine: "Our attempt at removing the curse was-"

You tug on Lumine's sleeve to get her attention because you saw the Eleventh Harbinger, Childe, outside through the window trying to listen in. She turns to look at you.

Lumine: "What now-?"

You pointed at Childe outside of the window, you were worried that Childe was trying to spy on the meeting.