If you haven’t tried locating the device with Find my iPhone if turn data on briefly should be able to go to iCloud.com and as long as it was enabled on the phone be able to see where the device is now or if battery has died the last spot it was while still alive.
Thanks for tips both replies
We went back first thing this
Morning and walked the same way and she did last night. And we located the device.
This was a good ale up call for my child. Their phone and it is her responsibility Ir she can buy a new one
Thanks again. Very helpful
Glad mother Jocelyn