You have my prayers on everything, but that SSI is your money, assuming you've been paying your FICA like a good little Bundist. My brother is on SSI, and it has reduced my dad's Social Security benefits, because it's coming out of his SSA "account." (He paid a metric boatload of FICA in the 40+ years he was in the workforce, so he doesn't feel a bit guilty about getting some of it back.)
Yep ...