Her Mother..
How was her mother getting an income to live? They didn't show her having a job, only saying how much she drank and her boyfriend was a crackhead. I know you can't get SSI for drug and alcohol problems because I have had some drinking problems with severe depression and anxiety and when I applied I was repeatedly denied. I'm over 50 and I'm still getting denied.
It could be she was getting welfare (TANF) except they require you to attend school or look for a job to keep getting a check so I don't think that would be it. Maybe in Michigan they have other social problems that I'm not aware of.