Mara tells Holly that she used to be a cheerleader. Actress Sarah Shahi really was a Dallas Cowboys Cheerleader from 1999-2000, and appeared in their calendar.
"HIPAA" is the Health Insurance Portability and Accountability Act, which regulates several aspects of medical caregivers, especially the privacy of patients' records. Mara conflates this with the "Hippocratic Oath", which is commonly associated with medical doctors and relates to their ethical responsibilities.