Nova Scotia's Marin Callaghan run at the 2021 Lakeshore U21 Girls Spiel came to an end in the semifinals with a 4-3 loss to New Brunswick's Celia Evans.
 
Nova Scotia's Marin Callaghan finished 1-2 in the 0-team qualifying round. . In their opening game, Nova Scotia's Marin Callaghan lost 6-5 to Nova Scotia's Allyson McNutt, droppimg another game, 6-4 to New Brunswick's Celia Evans where Nova Scotia's Marin Callaghan responded with a 9-3 win over New Brunswick's Paige Brewer in their final qualifying round match.
 
Nova Scotia's Marin Callaghan ranks th overall on the Year-to-Date rankings with points earned so far this season.