I would make it my job to collect the needed documents and also investigate programs that may offer a sheltered living situation, like a group home or similar, so you can move out.

Your mother will not live forever, so it's important if you're almost 30 to start living independently now, so she doesn't have to worry about what will happen when her life is over.

A group home situation will teach you life skills like cooking and cleaning, that you can use to perhaps graduate to a supervised independent living situation.