Um, is it true that Wonder Woman is considered a part of the Superman line of comics? If so, why isn't she heading her own line?

I don’t think that’s precisely correct, I think it just means she’s under that group’s editor, which is simply about giving each fiefdom a proper workload. Until she has lots of spin-off books, she wouldn’t need a full time group editor.

So she has to sell lots of books. Let’s get on that!