Shea was born in Saskatoon, but grew up in Bonnyville, Alberta. She attended the University of Alberta, double-majoring in Political Science and Psychology, until she came to the University of Saskatchewan to attend law school. During law school, Shea competed at the MacIntyre Cup as a member of the Western Canada Moot Team. Shea also served as an editor for the Saskatchewan Law Review.

Shea graduated from the University of Saskatchewan College of law in 2022. After law school, Shea clerked at the Court of King’s Bench for Saskatchewan in Saskatoon. During her time with the Court, Shea gained unique insights into the judicial process and judicial decision making that allows her to better serve her clients. Shea was called to the Saskatchewan Bar in 2023 and has since appeared on a variety of matters in both Provincial Court and the Court of King’s Bench. 

Shea practices exclusively in the area of criminal defence, with a specialized interest in defending sexual offences. She believes in everyone’s right to a fair trial and to have their guilt proven beyond a reasonable doubt.