The Velvet Mafia is a group of LBGTQ people who work together to do all sorts of nefarious things. Many of them are in entertainment. If she was working with Eddie Redmayne and his backers to ruin Benedict, it would make sense that the Velvet Mafia would be involved.
Look it up in my Archives. It’s also known as the Lavender Mafia, they are nasty AF and in HWood David Geffen is their king.