In Australia can a 15 year old decide where she lives?
Australia has no specific law as regards this. It's handled on a cases by cases basis. see links
Would it be legal for a 15 year old to run away and live with a friend if the police knew her whereabouts?
Can a 16 year old leave home in the state of South Carolina and not be brought back by the police if she does not want to go back to her dad27s house but will be in a safe house where she wants to liv?
She can choose between her mother and father unless their is a specific reason she can't live with her father. She can't live with a friend. You are a minor. No. You cannot move out. You can decide between parents, yes, but not moving out. Wait until you are 18 unless you live in a state that allows you to at 17.