"no real bills" I'd believe...if the parent said she lived at home (no rent, and food provided), was on parents' insurance (health, auto, etc.), had no student debt, and was walking distance to work.
But given that her parent didn't, I'd guess that isn't the case. Turns out rent, food, transportation, and like you said, student debt, are all...what's the word...real bills?
And I'd bet "real bills" are only bills that the parent deems worthy
mortgage, car payment, etc. I'm guessing teacher pays rent, utilities, pays for groceries...