I haven't been able to locate the phone for over an hour now. It could be that the phone is no longer within range of cell reception or WiFi...or it could be that when I locked my wife's phone around 1:30 pm, it upset the person who had the phone so that they smashed it.
This intriguing game of espionage has just been spiked with D-A-N-G-E-R! (for the phone...not for us)
Exhibit 1c: