Good story editing doesn't just look at grammar and word choice. Good story editing examines structure and pacing, tension and stakes, foreshadowing, signposting and making sure every story reaches a satisfying conclusion.
Ideally, story editing begins before a story is written. I can help make sure you're going into your interviews with a plan that sets your story up for success. And when it comes time to write, I can help you organize oodles and oodles of tape into an ideal story structure.
Of course, if you want me to come in at the end and help you improve on what you've already done, I can do that too.