My wife has been in Bali for 3 weeks and has been shopping her heart out. She now has the original suitcase, a small, less than carry on make up case, a new suitcase and a new duffle bag. Apparently the total weight of the 2 suitcases and the duffle is around 180 lbs.

She is flying dps-hkg-yyz in j on Tuesday. The suitcases come in at max limit each. If she can't get the duffle bag (40lbs) on as carry on. What is it likely to cost her. I can't find any specific information on the CX website as to charges.
Can anyone help