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.
Tell your LAWYER-LIKE friend that it's different when she talks to a COUSIN or a COWORKER......because she does NOT share any romantic past history with the cousin or the coworker.
So, she CAN'T compare her EX to a cousin/coworker. For somebody who argues like a LAWYER.....you'd think she's be BRIGHT enough to know it's not a fair comparison. Perhaps you should stump her with this response......and see how she reacts. If she rolls her eyes, starts huffing, annoyingly says nonsensical expressions like "Bah" or "Ugh" or "Whatev" or "Pshshsst"....or starts to stutter and say "Yeah, but, yeah , but"..............she can't find an excuse.