I think that she mentioned 'bad debt' -- this is typically a reference to consumer-level debt, often at 15-26% interest. Assuming 20% usury, the interest payments alone are $500/month, or 20% of her disposable income assuming she's lucky enough to have a assistant professor post (45-60k) -- adjunct professors make far less. Likely she also has another 20-60k in 'good debt' as educational loans at a more reasonable 8-12% interest.