There's no reason to give Chryse a token yet, since her Arts haven't been opened. I'm not clear on whether the Aegis extends into the regio, however; I suppose it does.
One more precaution Viola will have taken before coming out here: she'll have asked to have several grogs posted in the lab room with the statues, and a few more to guard the door to the crones' room. She's not sure what, if anything, is going to happen to any of these characters when Halia changes, since their ultimate fates aren't part of the story. (That might constitute poor planning, but a simple story is likely to work best.)
Viola nods, ":She turned one of you to stone, I know. But...you know the stories, yes? She feels dreadful for it. I know you still love your mother--or you wouldn't have come when I called."
Scott