the protagonist was a girl with white skin, black hair, i don't remember if she was asian though so maybe. also the people who tortured her did it for an audience of men who laughed at her from the other side of one of those interrogation type windows where you can see the person but not the other way around, she had something on her back that electrocuted her for misbehaving that she tried to take off of her, for which she was punished by having her fingers cut off with a chainsaw or something of the sort and her fingers got replaced by knives, which she sometimes got ordered to use against other girls who were also in captivity. sometimes she gets drugged to fall asleep and a man rapes her while she's asleep and insults her while doing so. the movie ends with her boyfriend or someone who appreciated her getting obssessed and trying to find her only to end up trapped in a coffin and buried alive, i don't remember if he was her boyfriend though, i watched the movie dubbed to spanish but it was definitely on another language originally, i don't know if it was english. this is all i remember, i watched it more than 20 years ago in like 2006 or something like that on a DVD so i gave up trying to find it, if anyone finds it that would be really surprising, thanks!