Empress of Britain

We are looking for passenger lists for the ship Empress of Britain (CPR), sailing from Liverpool in March, 1909. From the information elsewhere on this Website, we assume that the boat docked at Montreal or St. John, NB. The person we are looking for is Alida Brynla Andersdotter Helland, born at Helland Farm, Sand, Rogaland, Norway, in 1887. We have a postcard that she sent from Liverpool on March 11, 1909. I have searched her name on all the databases I could find on this site and Ancestry.com without success. We are not sure what name she used after leaving Norway, so finding a passenger list for this ship would be a big help! Thanks for any information.