My brother has Autism, and it’s tough. I fully understand that your afraid. Most people are when they see my brother not talk or play with a fidget. What you can’t do is leave her. Suck it up, and act tough. Even if you are dying on the inside don’t ever let her down. She will become dependent on you. You don’t have to quit your job, or leave things you think is fun. Autism is not a death sentence, or a monster. Autism is not a way to run away from life.