If she can not find a way to qualify to immigrate yourself, if one of you lives in AB, SK or MB, you may have a way to sponsor her under PNP family class. You can find links to those programs at http://www.cic.gc.ca/english/immigrate/provincial/apply-who.asp
If it's AB, you need to have lived there for 2 years. In SK or MB, one year is enough.