Whatever Ellie finds out about the cult, she'll bring back to share with some Heroes who happen to be around. That'll be easy for him to get into.

I'm not sure how many people know about Diamond Weapon. It depends on what James Kidd told people, I guess? Ellie hasn't spoken about it with anyone who wasn't in the group that went after Artemicion. But she'll probably have an update on that as well.

As far as public knowledge about the Brigand Leader, most people don't know much. She's had more of an impact in Aerilon, and a few merchants have complained about running into brigands while transporting goods, but none of the merchants are harmed.

And yup! As Brigand Leader, she's keeping the ruby crystal under wraps too because ha ha ha hell no does she ever want that thing getting used.