When Harry's name comes out of the Goblet's dancing flames, Hermione isn't sure what to feel. At first, she wonders if he did put his name in, endangering himself in the name of glory. But when she sees his face, she knows that isn't what happened.
So at first she is worried. They've been told how dangerous the Triwizard Tournament is. What if he doesn't make it out? But then she is confident, as she remembers what she told him two and a half years ago: "You're a great wizard, Harry." He still is, she thinks. If anyone can win a battle of magic, he can.
Then she realizes that it's not simply about magic: the contest probably involved magical creatures they've never encountered before. And she is worried again.
And so it goes on, cycling through worry, confidence, pride, and other emotions she can't even identify. But underneath all of them lie two emotions, each one both simple and complicated.
Love, for Harry.
Fear, of losing him.