"It took some convincing, but yes," she'll mention what happened with Elidibus if he really wants to, but there's no relevance to this situation.

"Okay, hold on. I went back with the intention of seeking out Hermes, not to seek out members of the Convocation. You and Hythlodaeus just happened to arrive there when I was trying to find a way in. No one else noticed me because 'my aether was too thin' according to you guys," said with added air quotes.

Throwing in a shrug, "It was you who gave up some of your aether upon Hythlodaeus's suggestion. I never intentionally outted who I was and my real purpose there." Is she moping a little? Maybe.