Just some notes for reference so you know what we did to solve the issue after our remote session:
First we checked itunes for backups
YEs, on a mac
We went to itunes/preferences/devices and noticed that there are several of backups which is very good.
We are currently looking for specific text messages from the past so one option is to do a restore from one of these backups and then check for the messages you are looking for on your device. However this can be time consuming as you would first have to guess when would be a good date for a backup and then do one by one if needed.
Therefore I showed how you can open messages and the account needed happened to already be signed in and we searched for the person in questions for the messages and the phone number
Explained why some messages come up by name and some come up by phone number.
This messages process to retrieve past messages is a lot easier then doing multiple backups however, there could be more messages within the backups then the ones showing in iMessages it just all depends.
Then I took notes in text edit while demonstrating how to save the messages to a .pdf file or how to print.
All is good and has what is needed.
VEry nice to work with and again take care.