Are you okay with Catty trying to read your character's mind? Yes. There are no limits to anything unless it's Hannibal-related, so as not to come into conflict with what people know about Hannibal outside of what Hannibal and Hannibal's mun have established in the game.
If yes, is there anything about your character that would give her difficulty in reading it? Newp, he's just an ordinary dude.