From 1923 to 1961 Danish teenage women were sent to the Island of Sprogoe where they were confined until they were sterilized or lobotomized so they could fit into the Danish society again. A crime could be too many boyfriends.
Some died, some escaped with help from local fishermen (the price was becoming their wives). Other ended up institutionalized for the rest of their lives.
Here is a link to the trailer:
https://www.youtube.com/watch?v=cBoQFNSb1kQ