If it's just the hezrou, the fort can maybe handle it with some casualties but no serious operational consequences, but hezrous are only mostly solitary and you can't rely on demons doing what they mostly do. The commander gives the order to read off a Sending scroll calling for a strike team before he heads out to be ready to meet the thing in battle.
"They didn't seem to be on the side of... Good?" he asks tentatively, because it would be sort of odd if she was expecting Chelish randos to be on the side of Good but he doesn't have another guess.
She laughs, hollowly, shaking her head. "No, no, I haven't forgotten where we are. This - this wasn't on the side of this fort."
She sighs and shakes her head. "Sorry, no, Lastwall's forts have discipline problems too. They look very different, but they have them. #11 is the best-disciplined Chelish fort I've ever spent time in, it's just - I don't normally stay with forts like this, right? I go, stay for a day or two with the strike team, and then leave. And this is - a part of it I hadn't thought about needing to get used to."
"Right. And this is a qualitatively different form of not acting as an allied unit, than they have in Lastwall's forts? - or you weren't trying to do counseling there because they have better trained clerics."