They don't meet - they just talk. But sometimes they talk for hours. She fills the void of what she is missing (communication) with this guy.
I still think it's wrong but again she questions me (like a lawyer) why it's wrong? When if it was a cousin or a coworker or a friends who is a girl and I would not have objections.
you should tell her to think abt it herself! shes old enough! being a married woman talking to an unmarried man who is her ex....talking for hours without her husband knowing the truth? it might hurt her husband but later its gonna hurt not only him but HER herself also his and her family too! do they have any kids?