E.M Malachite
This feels a lot like the teachings of his dad in him. There's been so little communication in his family that he can't even really think about talking to her. He makes it a point to separate his life from hers, then turns around and says he doesn't know her, and can't read her, so it creates this mistrust about her behavior, but it's like... Charles, that's because you're separating your life from her so much! Of course you don't know her! But also...no surprise. He's had no connections to people beyond his mother and, for a while too short, his brother.