The Vikings, seeded fourth in the tournament, end its year at 9-7. Top-seed Centre moves to 16-2 and will host Sewanee in Sunday's championship game.
Centre led in shots (27-19), draws (15-9) and ground balls (32-25). BC trailed 5-2 at halftime.
Goalkeeper Taylor Martin had eight saves in her last game for the Vikings.
Meg Hawthorne recorded three goals and dished four assists for the Colonels.