The crystal connection cuts dead, information acquired and no explanations forthcoming as to why she'd needed any of it or why she's made the decisions that she has, so it is safe to assume that she is probably on her way. That Guilfoyle was within snapping distance means that Gwenaëlle was herself likely not busy in the Gallows themselves,

so at least they don't have to wait long. He walks slightly ahead, a looming figure in muted tones of black and grey, servant's clothes but finely made: the sort of attendant expected to attend when how presentable he is might matter, or he had been. Unclear exactly what he is right now, besides someone who knows how to get to the alienage swifter and more familiarly than does Gwenaëlle, the bag requested in evidence but the woman holding it making no gestures as if she personally considers having brought it a matter of any urgency.

Taking in the scene she arrives to—

“One person tell me what the fuck is going on.”