It's a national park. The wolves are supposed to be there. Along with the black bears, grizzlies, and cougars.

(I should point out that firearms are prohibited in Canada's national parks, excepting park staff and peace officers. Given the speed of events, I doubt one would have been helpful except as a noisemaker. And anyway, I have yet to see a jogger willing to schlep a scattergun and ammo -- I can barely convince them to carry a fanny pack and water bottle.)

I agree with Teslin_ that this is statistically not a big deal. I have hiked this area for 20 years and have yet to see a wolf. (Though they may have seen me.) The real hazards in winter are icy trails, avalanche terrain, and the usual suspects such as hypothermia. When I walk there in winter, I hardly even think of large animal hazards, since the elk rut is over and the bears are all in bed.

It's the wolf's utter indifference, running right past an adult human, that gives me pause. A little too tame (habituated?) for comfort. In future, I might just keep a few useful items closer at hand on my solo forays.

As the owner fully recognizes, the dog should have been on a leash, and that might have tipped things the other way. To her credit, she takes responsibility for her mistake. Still, I feel for her loss -- it's hard not to second guess and beat yourself up over something like this.

(As for the concept of dogs on national park trails as a whole, well, I will only say that I leave mine at home and encourage others to do the same.)