Harry wouldn't have been alive at the end of first year if she wasn't there to use her spells or show him the right path to take. It was her knowledge that led him to the outcome. There was then second year where even while being petrified, she was still able to show them the information they needed to find the chamber. In the following year she was able to use her time turner to help Harry save the day again, and to be quite honest every year past this has had their issues solved with Hermione's answers.