How to identify iPhone backup on Mac

When we got new phones, I backed up my daughter's phone to my Macbook Pro.

Now her phone has crapped out and she's trying to identify what backup she has.

I looked and found that the backup would be here:

~/Library/Application Support/MobileSync/Backup/

And I found folders/files there, but I don't know how to tell what the backups are for (specifically whose phone and when).

Any ideas how to do that, when my daughter's phone is an hour away and not functioning?

Thanks.