“The Real Housewives of Atlanta” is known for some steamy scenes, but apparently season 13 is getting so wild… a woman walks away mid-season. Demanda Sam – who is not an official housewife but a “friend” of the series – has officially given up on filming the remainder of the current season … production sources tell TMZ. As to why … well, we are told it revolves around Cynthia Baileybachelorette party and what Tanya and Porsha Williams done with a stripper while the cameras were rolling… and what they may or may not have done when the cameras were off. Our sources say Tanya is not happy that the alleged stripper sex incident is being promoted so heavily for the upcoming season, so she quit filming halfway through. We’re told she had other issues as well – like her relationship with her fiancé and her alleged cheating at the center of Season 12 – but the stripper scandal was the last straw. Our sources say she hasn’t officially left “RHOA,” but she’s done for the new season… so viewers will notice her drop after a few episodes. We’re also told that at the moment, Tanya is so ticked off that she doesn’t even consider doing the reunion show at the end of the season. Season 13 premieres December 6.