Throughout her legal career, she has worked in private practice, as in-house counsel for a Modern Treaty organization, and in social and environmental justice organizations. She has appeared before trial and appellate courts, including the Supreme Court of Canada.

Katie has worked extensively on Pre-Confederation, Historic, and Modern Treaties. She has represented Indigenous groups in negotiations regarding Indigenous governance, fiscal financing, co-management, land claims, land use planning, the development of nuclear projects and radioactive waste management, and commercial and real estate development.

Selected Publications and Presentations:

• “Small Modular Nuclear Reactors: Implications in Modern Treaty Context”, presentation, Celebrating 50 years of Modern Treaty Successes and Challenges, Gatineau, February 24-26, 2025.
• “Indigenous Jurisdiction over Child and Family Services”, keynote address, Annual Conference of the Canadian Association for the Practical Study of Law in Education, Toronto, April 30, 2024.
• “Negotiating self-government arrangements”, presentation, Implementation of Indigenous Self-Governance: Beyond Recognition, Canadian Bar Association Aboriginal Law Conference, Ottawa, May 10-12, 2023.
• “Self-Government and Modern Treaties”, presentation, Modern Treaties: Honouring our Past; Building our Future, Ottawa, February 27-March 1, 2023.
• “The duty to consult and accommodate following the Supreme Court’s Decisions in Clyde Riverand the Chippewas of the Thames”, presentation at CBA conference: Développements récents en Matière de consultation autochtone et d’évaluation environnementale,  8, (2018)
• “Reconciling Aboriginal Rights with International Trade Agreements: Hupacasath First Nation v. Canada”, McGill International Journal of Sustainable Development Law & Policy, Vol. 8, No. 2 (2013)