1. I didn't have much more to tell, other than it's not a hoax. I'll do better next time.
2. Just a short blurb on the hourly radio news update, that I didn't catch in it's entirety because I had just turned the radio on. I heard and recognized the girl's name, and I heard the mom speaking about where the daughter was last seen.
3. WMAL AM-630 is DC area radio station. Leesburg and Reston, VA are DC suburbs.
When 11 o'clock news update is read, I'll write more detail. Sorry about not providing more info earlier, but all the "hoax" speculation here (and having a couple of teenagers myself) led me to post what little I did have right then, to stop the hoax talk. I see that has still not yet stopped.