content: As /u/Sir_Ebral already said, that's his fiancee wife, not his sister. She's also a filthy degenerate compared to the rest of the family, and there's some serious tension between her and the parents, as she's trying to expose the younger girls to the filth of the world that their parents have explicitly chosen to protect them from. They're the stars of some show, I think it's on TLC. I randomly caught a few episodes over Christmas while visiting my family. Can't remember the name of the show though.