Circe is often written as just being bad for the sake of being bad, which is both tiresome and a drama-stopper.
She has to have a MOTIVE to work. If I ask even Wonder Woman fans, “what motivates Circe?” most would not have a ready answer like you might for Luthor, Two-Face, or even Ares.
So my advice is, give her a motive, give her a narrative engine. The rest should fall into place if we KNOW WHAT SHE WANTS and she isn’t just Cruella DeVille.
Good luck!