You can say "you shouldn't do this! You're too young!" But what are you going to do to help her out of this situation? You said it yourself, she's childish. You think a child is capable of escaping a gang? Will you lend her a hand when she's free? Will you protect her from the enemies she'll make by leaving? Pray all you want, but in the end you let her walk away with a body in her bag.