I'm not sure what sort of choice she has, besides not working again. You can't clear student loan debt through bankruptcy, so unless she decides to not work again, I'm not sure what her options are to never pay off the debt. Maybe this is a negotiation tactic with the debtors to pay a fraction of the loan instead?
So, although unlikely, she may have based her decision on the possibility that, worse case scenario, she could have declared bankruptcy.
Now the $20,000 personal loan for living expenses, I assume would still be dischargeable in bankruptcy.