This sequence of her giving birth and Anakin being turned into Darth Vader originally were two separate scenes. And then, as we started editing, they started inter-cutting them more and more and taking some of the other materials that were irrelevant out of it. So that it really just cut from her to him to him to her…. Just in the moment he’s born, she dies. So we have that moment when he takes his first breath as Darth Vader, which is a symbol of him coming alive, and that’s followed by the scene of her saying “There’s still good in him” and dying. – George Lucas