Gretchen and Sara (SPOILERS)
Streaming Season 4 Episode 8 "The Price" right now, and Sara has the flashbacks of when she was held prisoner and those flashback scenes show Gretchen physically whipping Sara. What is not clear is why the hell did Gretchen do that to Sara? Was it some lesbian fetish thing? There was no need for it, she had Sara tied up, she wasn't going anywhere, why whip the poor woman?