sass2 - please PM me with information as to names on travel documents, departing airport, airline, travel dates... I can send you a letter on behalf of Beyond the Beach Children's Foundation which you can forward to the airline to see if they will allow excess baggage.
Westjet does allow one extra bag for humanitarian purposes but, they need to know in advance so they can plan for the extra weight.
Olive Thompson, President
Beyond the Beach Children's Foundation