So how would they know about the 2:30'ish "ping" at the restaurant area if they didn't get worried until 3'ish. I'm not questioning you, but rather trying to figure out how the app works that they used to try to find her. Does it give "last known location" or is it something that is done immediately.
In other words, if they checked the app at 3, would it give the location where the phone was at 2:30?
It could also be a safety app that sends a message if you don't cancel it. You enter a time and a help-me message, and when the time comes, it pops up a message asking if you're okay. If you don't cancel, it sends the message to your chosen contacts. It was designed for dating situations, but I've known several people who use it for running, solo hiking or biking, or things like that.
Sent from my iPhone using Tapatalk
Yes it shows last known location if phone is off or dead.