Lady Eriape was pretty far down Aspexia's list of problems to deal with, but that was when "Deal with her" meant infiltrating her lair and defeating her there. If a bunch of her nobles and other adventurers are going to do most of the work for her, she can spare a few minutes and some spells to make it stick. She said as much when asked by Cansellarion when he was planning the raid. So she's not surprised to get a late-night no-notice request for an audience.