Is this her new travel route, Saint John to Moncton and back (or is it just cause the Bimmer gets a lot of warranty work done, kidding)? Did she drive this route a lot in the past with her X1? What did she have for winters on that one? I don't think you could go wrong with Blizzacks or Xice, both are highly rated. The Blizz used to be better in deep snow and the Xice better on ice, but since they are the two top winter tires they keep improving and are more similar than ever before. If she has experience with one in the past and liked them then I'd say go that way, or do what I do when making a close decision, pick the cheaper of the two.