Im sorry to hear that yet I've been in your sister position, i've rebelled before been to house party's you name it i've done it. Yet I'm warning you now when my parent began to get even more stricter with me I WENT THE OTHER WAY, honestly God forgive me but i wished they would die, i regret what I said now but the way they handled the situation especially my mother was SUICIDE. They started to be on 24hr watch with me, checking everything i did, where i went i had to be accountable for every hour, they would phone me every hour well it may seem a little exaggerated it felt like it at the time. You name it they tried everything, stopped me physically going out, dragged me home, picked me up from school, take me to school everything physically possible. My mother was worse she wouldnt hear my side of the story all she was concerned with was What will the family think? what will the community think?
That was when I was 15/16, now im 18 and my relationship with my parents are strained at times but whose isn't. The only reason i ever decided to reason with my parents and follow the right and good path was not because my parents punished me harshly and kept track of me like im an animal, but my father he actually sat down with me on more occasion than i can remember and tried to make me see sense, at first i did not listen but through talking and actually facing the problems and creating compromises etc he made me see sense. most importantly the talks we shared he made me realise the importance of family etc and i think he was the first adult for a very long time who was open about his experiences. Im not saying go tell your children about your first time smoking etc but he was honest enough for me to trust him again. Honestly believe if my father hadn't been around talking to me, i would of ran away from home it was unbearable.
You might think im talking alot of rubbish, and this may seem like a very western way of dealing with this sort of situation. There is no easy fix to this, but i promise you hitting them and physically forcing them is not the right answer, Im not saying don't hit your child every so often, a child should be fearful of his parents yet if you hit your child till the point bruises/injuries are forming this is taking it too far and the law should intervene no question no ifs no buts. When your child is at a young age hitting them lightly is enough to bring fear. But at the age of 15 you have to use greater force which I personally believe is not acceptable, plus they are not learning anything really, you using physical force will have the opposite desired effects, you are not sorting the situation out all you've done is made them is angrier and sometimes even consider running away.
I rather have my daughter or Son home instead of them running away atleast then i could be certain they are okey and you could make sure they are not injured or hurt and if they are you could make sure they get the correct medical attention. Rather that then them getting caught up in more trouble as they are on their own.
I'm talking about a few years back from my own experience, not everyone is the same but I hope me being honest about this I've been able to shed a different perspective on the issue.