Could this potently be Flayn in disguise? I came across a comment online, and they noted that Orchel and Flayn have very similar speaking styles and mannerisms!

Orchel's profile states that she's out of touch with the world, but is a pure and kind individual who cannot ignore someone in need, and she's a priestess, so a potential healer? These character traits and her being a priestess remind me so much of Flayn 🤔

also because she's a cat, cats like fishes, just like Flayn likes fish haha

in her 3d render she looks quite pale, once again, just like Flayn

But if this is correct, I wonder why she is not with Seteth? And she is purposely wearing a mask to hide her whole face, unlike with Seteth who only dyed his hair blonde

I'm guessing they probably got separated, Seteth left Flayn with a group of capable people to protect her while he's out or that they are getting chased by someone or by a group of people

Nabateans were targeted in Fodlan, but since they're in Dadga they should be safe, because there are people in this land openly existing with those who have dragon features, with some of them being royals too, so why the need to hide themselves?