Perhaps, if Giriel were herself a daughter of Heaven and rightful heir to the thrones of this world, she would step into the camp and shout, her voice full of thunder, for all of them to stop their foolishness at once. It's what she wishes she could do, even as part of her sees it as the greatest hubris. 

She is, however, not such a daughter of Heaven, and she has no such power. Nor would she offer Zhaojun her own flesh under any circumstances. If she could get the mask to the Banneret, she would do that too and then let them all be tied up and taunted by N'yari. What a small price indeed to set Heaven's affairs aright! 

She glances at the combat again. No, she would not interfere. She knew N'yari, at least ones who weren't secretly heavenly spirits in disguise. Trying to stop their combat would cause chaos. Breaking the ritual, several would likely interfere, the General might even have an easier time breaking free. The last thing in the world that Giri wanted was to make this space look more like a chaotic melee or heaven forfend a [i]battlefield[/i]. 

So instead, she calls out a greeting to the gathered N'yari as she steps into the camp. Nevermind the Banneret, let her make a fool of herself. Giri is here openly, a guest, an arrival, a witch. "I am the witch, Giriel Bruinstead, at your service" she calls, and bows in the N'yari custom. She is looking for who is in charge, who will come to her and ask what she's doing and tell her of what's going on. It might be the N'yari currently fighting, it often is. No problem if that's the case, let's see who she gets instead or if that even stops the fight briefly.