"While many can pursue their dreams in solitude, other dreams are like great storms blowing hundreds, even thousands of dreams apart in their wake. Dreams breathe life into men and can cage them in suffering. Men live and die by their dreams. But long after they have been abandoned they still smolder deep in men's hearts. Some see nothing more than life and death. They are dead, for they have no dreams."
She did not bend the metal. She bent the small fragments of earth that were inside metal. Technically if there is no fragments of earth inside the metal and its completely pure, she wont be able to bend it because metal is not one of the bending elements.