I took "Jet" to the nearby veterinary clinic. They scanned her looking for an imbedded microchip. The result? We have good news: Jet is actually Roxy and, believe it or not, a patient of this particular clinic! They put in calls to her owners and will keep her until the owners are able to pick her up.
Munchie-Boy, however, was quite distraught as he and Roxy had developed a deep bond. Funny, Roxy didn't want us to leave as she kept leaning into my son's body as if saying "please, don't go!" My son broke down into a flood of tears. Seeing that broke my heart.
We've got to get this boy a dog to call his own!