McKinstry has more than 15 years' experience in the behavioral health field. She began her career in state government and served as the Legislative Liaison for the former Ohio Department of Alcohol and Drug Addiction Services. From there, she moved into the private sector working for various levels of behavioral health including inpatient hospitals, outpatient centers, and a child and adolescent residential center. Her positions held include Chief Executive Officer, Chief Operating Officer, and Director of Business Development. McKinstry has an MBA with a concentration in Healthcare Administration from Mount Vernon Nazarene University and a B.A. in Political Science from Ohio Dominican University.