Sarah’s accent sounds very similar to me to Canadian accents. The thing that stands out the most for me, both in her speech and that of Canadians, is “long o’s”.
Watch Ice Road Truckers on the History Channel sometime (great program), if you want to hear a lot of Canadian accents to compare to Sarah.
Because, being from PA (and a diehard hockey fan), I've heard Canadian accents before.
Hers seemed different to me.