Even if many saw her they wouldn't be able to recognize her, but this woman is Sereda, the best arcanist on the continent. In fact, not even those who saw Crhono at this moment would be able to recognize him.
They were acting incognito, they didn't want anyone to see them or guess what they were trying to do, not even their closest allies because even though they trust them, there are many ways to get information.
It's not that they believe that their allies are weak and that they can get information out of them. It's that in this world there are too many strange magics and sometimes not even power can stop them.
That's why they decided that this matter would remain between the two of them. The fewer people know about this, the easier it is to hide it. While it sounds easy, it's actually quite complex.
