She kept that silent promise, even after the entire school (including Ron) turned their collective back on Harry for getting into the Tournament. Hermione stayed firmly next to the raven-haired Gryffindor, studying with him, partnering with him in classes, and just being a true friend. Harry tried to get her to spend time with Ron so she wouldn’t foul up her friendship with the youngest male Weasley. She just smiled and said, "I’m not going to leave you alone. Who knows how much trouble you could get into!" and returned to studying.