Dagon had needed to take a swift flight after the information that had cursed his ears. Things had really complicated themselves now that Zephyra had revealed her 'treachery' - although he wasn't sure he wouldn't have done the same things she had in the same scenario.
He was a reasonable man at his core - but after the descriptions that left her mouth that calm demeanor cracked just a little. His mind clouded and all he could think of was Ilsandra's face and the scorn it must have had to hide to keep her beauty intact.
Then his imagination drifted towards Zephyra and how she must have had to hold herself together to hide the strength she had in order to stay under the radar. It must have been hell.
However, he had a deep affection for Azier, and to know she had hurt him in order to gain freedom rubbed him the wrong way -- but just a little.