That fox is Naruto's mom? That's impossible! Remember what happens when they meet while he's "inside" his mind/body during that cliff episode? The fox slashes against the gates then complains about the seal and talks about how it'd like to break out and devour him and tear him apart and tries to scare the shit out of him. Plus the fox has one pretty manly voice. If the fox was Naruto's parent then I doubt it'd act that way.