Guys i need advices

Guys i need advices my aunt's son stutters and he is 13 years old, he has genetic stuttering because I also stutter, but I plan to tell his parents to send him to a speech therapist, but I feel a little guilty when they will understand that stuttering it came genetically through me and I'm feeling very guilty even though I know it's not in my hands but I just feel this way and that's the reason why I still haven't told them to send him to a speech therapist