Her-Unremorseful, Wayward ex wife
Newchapter, check out this link. You can look up the various agencies in your area and they could answer some of you specific answers. A person with a disability can continue to receive SSI. If you or you ex are disabled or retired, your child can receive SSDAC based on your work credits. Without knowing the specifics of the disability, you might be able to get extended child support. PM me if you have more specific questions and I can try and help guide you.
Me-No longer a betrayed husband
"You are what you do. A man is defined by his actions, not his memory." - Kuato in Total Recall