I live in Calif. my daughter is severely disabled from birth. She can not do anything for herself. Her father has neer wanted visitation. She is 18, going on 19. Can I take him back to court and get child support past the age of 19? I have tried to ask at the court house and no one seems to know the answer.

Its unlikely. Is she getting SSI?

Yes you can if there is extrodinary expenses involved. The suport order could last a lifetime. This should have been asked for before.