OP, did you say that your parents were married on the FAFSA? If so, that is the root cause of the problem. I have seen many students incorrectly say “married,” because they don’t realize they can say “separated” in their case. Once “married” is marked, and Head of Household is indicated as a filing status, verification will usually be triggered - and the aid office is required to resolve the conflicting information. The info the aid office requested in Post #22 is standard for this situation. I would request a written statement from the mother indicating that she is actually separated and that Married was incorrectly indicated as the marital status on the FAFSA - that the mom has been separated since (date), and that the head of household status is correct because the father did not live in the household in 2014. I would ask that both the mom & student sign the statement. The rental agreement and utility bill provide further documentation that it is just the mother in the home.
You will be fine. Just stay in touch with the aid office to make sure you are giving them what they want and need.