Can a device without a cell or internet service receive messages from an inreach? or does the reviving device need an inreach as well?

I have an InReach that I keep on me at all times should I lose cell service. My spouse at home does not have one, should she lose cell/internet service I was wondering if I could still send her messages from my InReach or if she too would need an InReach to receive the messages without cell/internet.