One of the participants in Erroll Babbage's Sex Offender Group is a woman (or a cross-dressing male). She is seen during the scene in the community hall when everyone is sitting in a circle and Babbage is demanding if anyone knows anything about the whereabouts of the missing girl. Male and female sex offenders are always kept segregated in Community Sex Offender Treatment programs.
At the end of the movie, Viola is seen in the trailer with rubber gloves on. Errol then ties her up and takes her in his car to a buried body, where Viola gets out of the rope she's tied with. However, the rubber gloves are now missing; they reappear once more when she is slapped by Allison.
Erroll Babbage: People like Paul and Viola Gerard don't just tell lies, they *are* lies. In public they're decent, socially-responsible folk who look you in the eye, but never long enough to make you uncomfortable. They shake your hand, pat you on the back, but never overdo it. They're Christian if you are, they swear if you do, and they do this because people like you wrongly believe that public presentation tell us all about private lives.