If you’re curious about the source material for the film (and you read German), you can check it out for free online: Mine-Haha, or the Corporal Education of Young Girls, by the German playwright Frank Wedekind. It isn’t available in English, so far as I can tell, though there are many translations of his equally puberty-obsessed plays (Spring Awakening being the most famous, and Pandora’s Box being the one that was made into a G.W. Pabst movie with Louise Brooks).
Also, there’s another new movie based on “Mine-Haha”—I haven’t seen it, but apparently it’s bad. The IMBD entry for Fine Art of Love: Mine-Ha-Ha is here.
I made some brief arguments regarding the connections Innocence director Lucile Hadzihalilovic makes between her vision of a confined girlhood and various (mostly male, possibly perverse) ideas about what little girls are good for. I could go on and on about the image of the little girl—and her being-toward-death—in Western culture going back to Antigone, but you guys don’t want to read that. You just want to hear about what creepy things Lewis Carroll wrote about little girls’ knees.
Compare and contrast:
A photograph by Charles Dodgson (aka Lewis Carroll) of Xie Kitchin on a chaise longue:
A film still from Innocence: