Its been a little over 2 and a half years

Since i woke up to being molested by my uncle. Im 15 now and i've only told two of my friends. I am conflicted because he is moderate to severely autistic (if i say anything offensive i apologize, i am simply stating things that i know from his mom, my grandmother, and i haven't exactly looked into much about autism) and has spent quite a lot of his life in state custody like schools for mentally deficient childrens, so i don't want to say anything because i don't want him to have to spend more of his life in some facility that limits his freedom but i also am scared of him. And i really want to get therapy for more than just that, but im scared to talk about it to them cause i don't want my therapist to tell my parents. My mom has borderline personality disorder so she has a lot on her plate as it is, and my dad is unreasonable and would undoubtedly beat the shit out if him if he found out. I honestly dont know whats the right thing to do, especially after all the time thats passed.... Any advice?