Katherine, the reason advocates do not list that information is simple. The missing face discrimination in so many areas, it would shock you.
People will not look for some who are missing, simply by their age, their classification (i.e. runaway, non-custodial parental abduction, etc.), their color, their hair color, their sex, or their JOB....yes their job, or lack of one.
If you knew what the media normally latches onto, in so far as the missing are concerned, it would disturb you.
LE knew what was necessary, and we as citizens do not need to know certain details.
It jeopardizes getting people back, and God forbid, if someone hurt them, it jeopardizes justice. Less is more, in this situation.
I hope this makes sense to you.
Prayers for Emily, that she is found and soon.
With HOPE, Lanie