On Wednesday I met up with a mother I had interviewed (for the Asperger's book I'm writing) several months ago and her 18-year-old daughter. They flew in from Tennessee. We had a late lunch at the Tick Tock Diner near Penn Station. The girl is not ready to drive, and not ready to go to college yet. But I know she's going to be fine. She's very intelligent, very high-functioning, and I think just a "late-bloomer." When will she be ready to begin taking adult responsibilities? I don't know. If I had to make a guess, five years. She's not going to need "supported living." All she needs is more time to reach adulthood.
Anyway, I had a good time with mother and daughter, and we hung out in the restaurant for over two hours. We laughed a lot-- the daughter has the same deranged sense of humor I do-- talked about issues with Asperger's, and more. I listened to the daughter's interest in Nintendo and Pokémon, and they listened to my theory about why I think the late Dr. Jack Kevorkian had Asperger's syndrome. And we laughed. And laughed. And laughed some more. And that's important. Not all conversations have to be serious, and not all (or even any) have to be about "social" topics. What matters is the participants have a good time.
The daughter is going to be fine. Just give her time.