Not sure about anyone else, but I'm hoping to keep the MC's mom away from any of the staff at the club; I don't trust them. For that matter, I'd like to keep her away from the guests too.
I think eventually the MC will have to tell his mom about the club, at least in a broad strokes type of explanation. My hope it that will come as part of the ending, after the MC has managed to get the club shut down. Though he may have to tell her something sooner, if only to keep her out of Edwin and Kat's clutches.
Granted it's a long way off. He still needs to find a way to prove what Edwin and Kat have done to get them ousted. Which will be difficult, both because they are good at covering their tracks, and because, as August has pointed out, there are a number of powerful people, including those in law enforcement, that frequent the club.
By the way, what tape are you talking about? The one from Rosalind's scene at the club? If so, those of us that chose to let Ian have that scene with her don't need to worry about that.