Relationship woes!?

if your sister is under age, meaning under 18. your parents can have her committed to an institution of some sort for doing whatever she does thats illegal. otherwise, their isnt to much anyone can do, except maybe, get her arrested. but, that really wouldnt be a constructive,and positive thing to do, to her. she is ruining her own life, and she is the only one who can save herself. at least make a decision, to let you all help her. sometimes, letting go, is the only way to bring someone, back to you.....or not. their is no easy answers here...God bless!