She worked as a criminal lawyer for the ACT Director of Public Prosecutions from 2013 to 2018, including in the family violence and sexual offences units. She was named the ACT Young Lawyer of the Year in 2016 and sat on the Governance Committee of the Canberra Rape Crisis Centre. She has published articles in law reform and policy, particularly in relation to sexualised and family violence.

In 2018, Katrina was appointed the Director of the ACT’s Child Abuse Royal Commission Criminal Justice Response Team – responsible for implementing the criminal justice recommendations of the Royal Commission into Institutional Reponses to Child Sexual Abuse in the Australian Capital Territory. She was also awarded a Churchill Fellowship in 2018 to research the use of relationships and sex education to safeguard sexual wellbeing, which included researching practises in Europe and North America.