Her aura becomes lightning based. While she can summon a lightning bolt at its most basic form and affix herself to lightning for movement, she can't do other lightning based abilities that would come with it. Its more a boost of her fighting abilities and she coarse her magic off into blasts, etc of its rawest form. Lightning usage is a far more taxing ability then you think. It would more then likely leave her exhausted to be doing such high level techniques.