Fiorella grew up in a house in which there was a place for everything and everything was in its place. Except, of course, for Fio. As her father informed her years later, she was their "wild child."
Now, this isn't to say that Fio doesn't like stability. To the contrary, she adores stability, clings to stability, strives for stability. Thus she avoids cooking or cleaning house--meals are eaten and gone while houses rapidly get dirty again. On the other hand, compositions, whether in art or music or literature, are stable. They don't self-combust.
Let's face it: Fio likes stability in her life because she herself is so unstable.