I want to find a movie, it should be from the early 90's I think, foreign language(could be spanish) about a girl which

A girl which was raised as an orphan, and she remembered good stuff about her childhood and the place she was raised.
Whenshe got older (like 20) she and her friend (girl) go together to the place that she was raised.
And they found out that in this place they were mulesting children and make porn movies. And she found out she was mulested.
At the end there is a witch which get burned I think.
There is also a scene in the middle where her friend doing moves like she jurk off on a statue.