[3] In 2007, O'Neill won the Ontario Junior Mixed title, playing third for the Scott McDonald rink.

O'Neill began her women's career skipping a rink on the World Curling Tour in 2007.

In 2015, O'Neil won the 2016 Ontario Mixed championship, throwing third rocks on a team consisting of Mike McLean, Andrew Denny and Karen Sagle.

O'Neill found more success that season with the Hanna rink, qualifying for her first ever Ontario Scotties Tournament of Hearts.

At the 2016 Ontario Scotties Tournament of Hearts, the Hanna rink beat the World #1 ranked Rachel Homan rink in the final, qualifying the team to represent Ontario at the 2016 Scotties Tournament of Hearts.