An idea I had, that I'm unsure if it's a good one and I also don't have the time right now to pursue (this is my second login just to try to get this post written, sigh) is to look on Facebook for groups that we could post her picture in to see if anyone recognizes her.
For example, where I live, we have a high school fb and a county fb. I browsed a little bit for Scottsdale, but so far all I found were more like information pages that can't be posted on. I was thinking about looking for Scottsdale, Denton, Arlington, and Leonard, but bypassing Longview, since we know she was there under the assumed name. I was planning on contacting admins of any pages I found asking them to just post the picture without any backstory attached and having anyone who recognized her pm the admin with the info. Unfortunately, it looks like it's going to be a few months before I have enough extra time to do this kind of stuff. And now I have to get back to work :-(