If it's a photo your girls took whilst location was enabled on their phone, you might be able to check the metadata of the photo. To be upfront, though, most modern phones tend to scrub this information, so it would be quite a long shot. You could try uploading a photo on a site like this: https://jimpl.com/ or this https://pixelpeeper.com/app and see how you go. Source: 11 months ago

There's also a big chance that the photo contains other metadata including GPS location, camera make and model, and much more that you can leverage. You can use a site like https://jimpl.com/ to view the full metadata. Source: 12 months ago

There is a free tool online that does that exactly for you link. Source: about 1 year ago

There are plenty of meta data cleaners online https://jimpl.com/ is one. Source: about 1 year ago

Can you check one of the photos that supposedly has face tags in it in one of those online exif viewers? For instance: https://jimpl.com/. Source: over 1 year ago

To geotag them I have always used Geosetter https://geosetter.de/ but the software hasn't been updated for years and I can't use it anymore. Source: 8 months ago