I have 7 years of experience in the media. I've made numerous short form video stories as a video journalist and more recently, I had my own CEO talk show. I was charged with coming up with story ideas, writing, and researching for my show and my stories.
From your description, I would say you needed to interview some of the children as well as people who work with you. You will also be interviewed for the video. We would talk about what the group does, how it started, the process you use during therapy, and successes and milestones.