Mostly it has to do with certain lack of specifics. However, I just learned this was a presser from the fire department and not one called by the VSP which may be the reason why.
I do still have a feeling of foul play.
Other thoughts . .
Suicide? Possible, but not likely imho. Fitness and endorphins! Plus we've heard nothing to indicate trouble or dissatisfaction in personal/professional life.
Accident on trail? Unlikely, because I believe she would have be found.
Accident off trail? Possible, but hikers are more likely to go off-trail, not runners.
The above is only my personal opinions that weigh in as to why I lean more towards foul play.
She was recently separated from her husband. They were not living together. They have only been married for 3 years... I think that's something that would be cause for personal dissatisfaction.