Did she tell this as Selen? Did she ever said "debt"? All i ever heard from her is just "oh yeah i spent a lot of money".
There was japan lawyer too. And as i understand it, lawyers were hired and paid by her wealthy parents, or maybe even Mumei, who knows. I haven't got a feeling that she was proactive in any legal matters back then. Who knows with BPD though.
So, debt is just your unsubstantiated rrat. I doubt she have any debts now. Maaaaybe she'd get a loan for a merch drop, but this is not your point.