Found these for an Alice Hood travelling to Canada...
                                     Year of Birth         Year of Travel    Port From     Country     Port To
HOOD   Alice            1901   F                  1911             Glasgow   Canada   Quebec   
HOOD   Alice            1919   F                  1927              Southampton   Canada   Montreal   
HOOD   Alice            1913   F                  1930               Greenock   Canada   Saint John NB   
HOOD   Alice             Unknown                 1946                 Liverpool   Canada   Halifax   
HOOD   Alice            1930   F                   1955              Liverpool   Canada   Montreal   
HOOD   Alice Isabel   1907   F                   1926              Southampton   Canada   Quebec   
HOOD   Alice Isabel   1907   F                   1926              Southampton   Canada   Quebec   
HOOD   Alice M          
 1885   F                   1917              Liverpool   Canada   Montreal   
the last one 1885 is most likely, as the others will be too young, if she was working by 1900, there is the possibility that they married?? and both were Watson, there is almost 2 pages of an Alice Watson of varying ages and travelling at varying times to Canada.
There is far too many Joseph Watson to know which may be him, we need more specific information, like his first name, approximate date of birth, his wifes first name etc., also did he and Alice Hood marry in Canada or UK??
Will have a look and see if I can find the Watson's on the 1901 census for the areas you mention.
bendywendy
This is the site for looking up sea travel, you will need to pay to see the full information, but if you have most of their details this cuts down on the amount you need to view
http://www.ancestorsonboard.com/