When Student Debt Comes Home to Roost and Fast Track Mortgage Payoff Dear Mary: Several years ago I decided to become a medical transcription. I had no knowledge how school loans work and signed a student loan from Sallie Mae for $7,000 with a 12-month deferment on payments. It took 15 months to finish school, so my payments started before finishing. I am still paying $134 a month on the loan…