That's not really a fact, though... In the most literal sense, she is heartless. A machine can replace the function of a heart, but it is not a heart in the philosophical nor biological sense. A man without legs and the best prothesis in the world still lost his legs. They are not "new legs plus perks" in any rigorous sense.
Heart
"a hollow *muscular* *organ* that pumps the blood through the circulatory system by *rhythmic contraction and dilation*. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles."
Hearts are by definition organic and a muscle. A devil would know that much.