younger siblings

i am the eldest of 5 children.three of my younger siblings happen to be girls which in lahore is tough.the first two are grown up and are fine.the younger one well shes going through the age where shes not only giving my parents trouble but is creating nightmares for me as well.she's in O-levels and this generation is just insane.i thought i was crazy but these people are dangerously crazy.every day i hear stories of more and more high schoolers doing crazy shit like exctasy and coke.im scared.in my time which was oh 10 years ago ciggarette was the tabboo thing..khair i consider myself the deprived zia-ul-haq generation.anyway my point is that im scared because theres an age and place for everything.in fact theres no time and place for certain things.im not worried about my sister right now but peer pressure can cause people to do wierd things at this age.i mean it wasnt so long ago that she was this sweet tender little angel.she's still an angel but a very rebellious one.lunches,dinners,gts.uff its too much.i dont know wat to do.cracking down isnt the option and frankly talking and explaining shit is useless as well cos they listen from one ear and out it goes from the other.i guess everyone at this age has to go through their own share of mistakes and trials.they have to learn themselves.all i can do is be the safety net.plus i have a ten year old brother who is growing up pretty fast.hmm...