If I remember correctly, you need to defeat the boss at the bottom floor of the Aether Mine next (if you couldn't explore the Aether Mine before, you should be able to now after having triggered the cutscene in Organa). The Aether Mine is located just a bit south(west) of Organa, slightly northeast of the Wayfarer's Rest. If you walk from Organa to the Wayfarer's Rest or the other way round, you can't really miss it.