Malabimba. 1979.
Malabimba is a 16 year old girl who begins to show signs of demonic possession.
You do a Seance/Ouija board play and and end up paying the price, another Italian Exorcist knock off with a bit more sleaze. Is Malabimba possessed or just a sexually frustrated teen who likes to hump a standing mirror. This must be a uncut version I found as the BBFC would have a field day with this one as we see everything. Marieangelo Giordano plays the nun who comes to help the troubled teen and does get out of her habit.
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Although I streamed this, there wasn't any subtitles but half the time I don't think mattered much