Great Britain's women lost 63-50 against Canada in Edinburgh on Sunday to square their two-match series.
Jo Leedham and Natalie Stafford top-scored for Britain with 14 points each, but it wasn't enough to prevent defeat.
Canada were set on revenge after the GB squad beat them 70-57 at the Meadowbank Arena on Saturday, and raced into an early 28-6 lead.
Britain fought back to 35-31 in the third quarter, but Canada - who have to qualify for the Olympics - raced away.
Leedham said: "That's not what we're about. We've showed glimpses of how we need to be and the style we need to play.
"But to not do it consistently really hurts, especially in Edinburgh where the crowd was really great. It was disappointing."
Britain now head to Turkey for a four-nation tournament, opening against Korea on Friday.