Youre absolutely right Naptowner - if she lives in the U.S.
The common thread for common law marriages in every state in the U.S. is that the couple "hold themsevles out to the community" as husband and wife. You dont automatically become common law simply by living together/sharing property. If you tell people you arent married, then you cant possibly have a common law marriage.
However, thats not the case in Canada for common law relationships.
But the difference is that in the U.S. a common law marriage IS a marriage. In order to break out of it, a couple must obtain a divorce just as if they had gotten a marriage license and had the ceremony performed. Common law in Canada is different - its more like a type of domestic partnership status that is conferred on couples (heterosexual and homosexual) who cohabitate for a period of time. Its not an actual marriage though like *here* in the U.S.
My guess is that shes Canadian.