I don't know about the addiction stuff and lacking confidence, but I get the gist of what you're saying. From my perspective, I don't see it as negative traits or signs that she has bigger issues. That's just how some people are. She's a guarded person and she knows how to separate and compartmentalize herself. Personally, without knowing what's going more than anybody else, I respect that about her. It shows she's smart and in control of her own self. People saying that as something against her kind of baffles me!!!