to-rain-on-your-parade-in-cheliax
Gorthoklek is conspicuously absent. As is everyone else, including some of Aspexia's subordinates.
She is now seriously alarmed. A pit fiend who does not wish to move is, generally speaking, immovable.
She does not have a permanent telepathic bond with Aspexia, because Aspexia has not yet agreed to her conditions for when she is allowed to message Abrogail. She does not have one with anyone else in her security apparatus, because it is expensive and she isn't sure yet which of them will still have their job in a month. She doesn't have any non-permanent telepathic bonds up, because a fifth-circle spell every hour is differently expensive, and her security wizards need their spells for other things.
The standing security protocol, in the extremely unlikely event of her security team vanishing and Gorthoklek not being at his post, can be interpreted as saying she should retreat to a secured plane and sending Aspexia from there, even though it will cost her ten minutes of not personally responding to an attack. If someone managed to take out Gorthoklek, Aspexia (and possibly Hell itself) should have been alerted by now, even without her intervention.
Other archmages - she feels she deserves the title, even at 8th circle, on account of her crown; it's not as if Morgethai dares to challenge her rule - other archmages, when threatened by a mysterious force, retreat to their private secure demiplanes. But she is better than that. She does not need a demiplane, because she has the planes of Hell itself at her call.
(Also, she hasn't found a fork for Infrexus's private demiplanes yet, and a new one with all the necessary permanent spells costs too much. Maybe she should have arranged that tax report after all, on the subject of why is there not more money when your Queen requires it.)
She plane shifts to Avernus, mulling whether to teleport to the Promised Land or to plane shift further into Dis before Sending Aspexia.