You'll find it in the Inland Guide...
somewhere.
Found it:
Whom may I sponsor using this application package?
You may sponsor your spouse or common‑law partner if he or she meets the following requirements:
* lives with you in Canada,
Clearly, you would no longer be living with her in Canada, correct?
Suffice to say that it is an absolute requirement that both people live together IN Canada, hence the
Inland part of the Inland application.
Short trips apart and/or outside of Canada (such as a couple of weeks) are usually not a problem. Since CIC will have access to your border crossing details, they will undoubtedly know if you breach the condition.