I see your point. Her past is not porn-movie lurid. However, Janis has talked about streaking, nude modeling (in which she felt more like a bowl of fruit), being “extremely popular with the boys” when she was in school (JJ wrote it with a bit of a hint to it), and a couple of other instances.
Still a darn lot better than anything I ever did in four years of college, and I was always pushing the frontier.