A few official admin comments from the Missing Mother FB Page:
Admin Comments on their December 6 post
Missing Mother - Kelsey Berreth We are not aware of any dating sites at this time. if she was traveling home to Washington, she could have driven through Idaho. Law enforcement in Idaho is working with the Woodland Park Police Department where she is living.
A person asked: There is a residential treatment center there for drug and alcohol rehab. Is there a possbility she checked in there? (Not saying she has a problem, just a possibility)
Missing Mother - Kelsey Berreth Barbara Porter no chance.
Missing Mother - Kelsey Berreth Kelsey has no medical issues.
Someone asked if she was depressed, under any medication or new so to take other steps and have an EMA as soon as possible.
Missing Mother - Kelsey Berreth None of the above.
Also an interesting comment on a December 9 admin post by an anchor from KRDO/News Channel 13.