You might want to lay your cards on the table and tell her that you watched her location. If you are OK with her being a Hotwife, now would be the time to say that too. It sounds like she has a thing for variety to start with.
Even with an guy she was totally enchanted with, I'm sure my wife would never fuck in an adult theater. I'm not really sure I'm disappointed about that. She's wild enough already. LOL