While attending Osgoode Hall Law School, Scarlet was a caseworker and Division Leader at CLASP, and a recipient of the Harley D. Hallet scholarship. After graduating, she led a busy criminal defence practice representing clients on a wide range of charges in the Ontario Court of Justice and the Superior Court of Justice, regularly conducting trials before Judges and Juries. She has also represented clients at the Ontario Review Board and Parole Board of Canada. Scarlet returned to CLASP as the supervising lawyer of the criminal law division in 2018, and stepped into the role of Clinic Director in 2022.