Good questions, but I have no answers now. The only vaguely scientific thing we accomplished was creating compound models that show the sexual arousal of a vulva. I was told that it "became puffy/engorged", but couldn't ever really see that in action. Until we made of model of a woman before arousal and just prior to orgasm.
Our compound models are truly the most interesting ones:
Sadly, this project doesn't have a future. This HN post has gathered the most interest in the project yet. A clickbait headline got people to look, nothing else. :(
https://news.ycombinator.com/item?id=28350174
Best of luck.