My daughter is lose to this age, and a runner. I've been following along but not posting. Although just about anything is possible, I'm getting a strong self harm, or runaway vibe. I don't know that Mollie has the resources to leave and become someone else in another state. I do know some runners like to get away from it all, and run, to clear their head, to deal with stress, anxiety, depression. It's an activity where you are competing only with yourself. You don't have to impress anyone with your skill.
My thinking may be jaded because I have been dealing with the suicidal thoughts, the depression, and anxiety with my own daughter. To most that know her? She's great! She's doing wonderful! To her father, me, and her boyfriend? We're on pins and needles.
Getting a short, OK, reply text would be the normal right now with my daughter. Even a thumbs up, rather than type anything.
I've seen that VCSO link, and her twitter, and she does mention mental health on both. Whether for herself, or someone she cares for, I don't know.
I would hope if it was self harm, she would have been found by now. But people have been overlooked in searches before.
I keep thinking of the young lady, Sierra, while riding her bike.... the area even looks similar. A lunatic was living right in the area! So that's possible as well.
If LE thought she was still alive, and thought she was abducted, wouldn't we see more urgency in getting to her? IMO, it looks like they are searching for a body, and taking all the necessary steps to insure a conviction. But I'm not a detective.