Did you search around? If so, find any discussion at all?
I am going to do some searching for discussion about this case on the BDSM website I frequent. I haven't seen a ton of discussion about it. Also, in many amateur S&M bondage photos shared online, the participants wear masks or conceal their faces, which would make recognizing these ladies really difficult.
EDIT: Sorry, this was in reply to someone asking me if the case was well known enough in the BDSM community that people would recognize pictures of the victims if they stumbled upon them online somewhere.