No Idea but in all honesty F**k Kakashi hope he dies for doing that.
WOW, I'm gonna hold you to that.
Kakashi probably had a very good reason for doing it and I'm guessing by the shock on his face when he noticed she was on the receiving end of his Chidori, that he did NOT mean to kill her. I am guessing a mind transfer technique was used or a form of Genjutsu...or something a long those lines.