Maybe see if there is a support group in your area for people that stutter? Is the young person in speech therapy? There was a very good movie that came out a couple years ago called "The King's Speech" [Stuttering Singer on The Voice](https://www.youtube.com/watch?v=TS6orGeabcA) Mel Tillis was a famous country music singer that had a serious stutter. [Different Stuttering Support channels on Youtube](https://www.youtube.com/results?search_query=stuttering+support+group)