I was reading that mountain lions (I lived in southern Oregon on the coast) don’t usually go for humans, they’re afraid of them but are more likely to go for immobilized people or people “playing dead.” An adult male averages 120-200lbs. I really hope she went out there with some kind
Yes, if you encounter a mountain lion it's essential you remain standing and make yourself look as large as you can. I believe she's still up at an alpine altitude, just hidden by rocks. I doubt a mountain lion would be that high up. And I have never seen or heard a coyote on an alpine technical climb/hike.
If she was not abducted (which I believe is fairly improbable compared to injury/fall) I think Sam is smart enough to just stop where she's at and wait to be found. It's usually the unseasoned hikers that just keep walking and walking until they are hopelessly lost and outside of the search area.