The Secrets (2007)

Two Orthodox Jewish girls go on a journey of Sapphic self-discovery in The Secrets (2007). Noemi (Ania Bukstein) is the daughter of an ultra-orthodox rabbi who convinces her father to let her spend a year studying at a seminary for women. There, she meets fellow student Michal (Michal Schtamler) while performing good works for elderly, aging foreigner Anouk (Fanny Ardant). The girls strike up a friendship with the older woman and lead her through secret Kabalistic cleansing rituals; meanwhile, their relationship has grown so close that they have some sexy secrets of their own. Fast-forward to the 43-minute mark to see Ania and Michal in SKINtimate detail as they bathe fully nude in a cave. Looks like the secret's out...