honeymann
I have interrogated this question in microscopic detail while my file was in process. After talking to a bunch of lawyers, I got the basic message: Ideally the sponsor has to reside in Canada while the PR file, not only the sponsorship process, is in process.
However, if the need may arise, the sponsor is obviously allowed to leave Canada but it should ideally NOT exceed 1 month. If it is 1 month or more than that then issue of varying degrees may arise which includes they may just ask you the reason for this trip.
Finally, you have to make sure that when you land in Canada as a PR, either the sponsor MUST be present in Canada or she should be at least on a flight with you. This one is CRITICAL
THANXZZZ
AND
if we have appropriate reason that her father was not well and she was coming here to meet me too ,,,,
This is my experience and knowledge.
Hope this helps