Wow, this is a tough one! I am wondering if having them visit each other is a good idea to begin with. I never want to keep loved ones apart, but it’s pretty clear that they both confuse and upset one another. So the husband just has short term memory loss? That’s it? Perhaps make him a cue card that he can look at when entering the visit. “She may not know who you are” is what the card could say. That said, it doesn’t feel like that scenario will end well, either. He may be confused by this just as much as she is. My honest recommendation is, if they need to see each other, just let them interact. I doubt any amount of coaching will help because neither can recall what you’ve advised!