No. He beat her on the first try. It just took a lot longer than it would have if he had done what I told him. The boss was invisible, and there was an item thingy that was supposed to show all of the enemies that hide or turn invisible. But he didn't use the item. :(
I had a chance to play Twilight Princess, but my brothers didn't let me play it. And it was a borrowed game. Also, I had to help one of them beat a boss. :P He owes me.