Marilyn Stei has 25 years of experience as a probation officer with an emphasis on addiction. She earned a master's degree in 1997, retired in 2002 and established MGS Consuting, LLC, a training and consulting business dedicated to bridging the gap between criminal justice and treatment. She worked as a traininer for the Pennsylvania Certification Board, Department of Drug and Alcohol Programs, Juvenile Justice Judges Commission. She also served as an adjunct professor for Millersville University in the Social Work Department.