Messages auto-purge (but not everyone)

[bigfatipod]

There's a feature in Messages that allows you to delete messages after a period of time. I'm interested in this, but I would want to keep all the messages from my wife. Is there any way to do that, I couldn't uncover that option just poking around.
Thanks

 

[Paddle1]

Can't be done, it's all or nothing.

 

[bigfatipod]

thank you