[That's fair. It sure is a bitter point, and he's not sure what to make of that look until Wei Wuxian continues and his expression shifts to something a little...devastated, maybe.Or at least a little unhappy because wow, they super fucked up in not keeping her alive and yet this sure is a thing.]

...she was a pretty big help with that, too. We've been working on getting everything together for weeks. [A gesture toward one of the walls Wei Wuxian can't see.] Notes are pinned up for reference later. We used to do debriefings before curfew or after the exorcisms. Sometimes both.