I just finished a book called Roses and Rot, that is about sisterhood and the creative process. It's a very loose retelling of Tam Lin (the ballad). It was good enough that when I finished it, about two hours later I flipped it over and reread the whole thing. Definitely worth reading if you are a creative person. It does have a couple of sex scenes in it, so beware of those if that's not what you want.