I noticed that too. But I noticed a few other things that works in her favour:
- timing of sighting fits.
- no tweets or movement from her all weekend which fits her "weekend trip from Edmonton to Jasper"
- and a series of tweets within 15 minutes of each other on Monday morning that includes that winky face tweet to AmazingRaceCDA ("haha, I totally saw something"??) , and also to Jasper Tram, and Best Western Jasper all point to her having no twitter access over the weekend when sighting supposedly occurred.
I could be wrong, but when I saw the winky face on that tweet the AmazingRaceCDA I read the whole thing in a tone reflective of "I know something I'm not supposed to".
Mind you, being such a popular tourist area, you'd expect more sightings. Personally, I'm 70% sure of the validity of the sighting. We shall see how it turns out