While I walked around the city with the group of Masters, showing my face to the army, my avatar inside my core is watching the footage Ashlyn is sending me in real-time and analyzing it.
Ashlyn is amazing; she is invisible as she flies around the fortress of Grimm, looking at enemies that are both visible and invisible.
She wanted to enter inside the Grimm fortress to get an even better look, but I had stopped her from doing that.
Unlike the regular Tyrant powerhouse, Grandmasters are completely different; they have a vast number of abilities and operate very powerful artifacts, some of which might be able to detect Ashlyn.
So, unless there is really a need and I have become very sure she could get away from any Grandmaster, I would not let her any of such risks with her safety.