Some interesting speculation:
The 2 comments are interesting. Also, the article says no visible external injuries, but if an animal tore the tongue out of the woman, it would have had to chew thru a hard-frozen (-30F) face to get to it. Or was the tongue removed and the face still intact until discovered at autopsy? I thought I also read her eyeballs were missing.
Lots and lots of questions, and even more missing facts.
When there is an avalanche the sign of it are very evident.