You would use a open stance.
One option that she has is to give into the pressure, but then she may be faced with addiction and getting in trouble.
Second option is to leave, but it may cause social problems with her friends, they may get mad at her, but at least she will be safe.
third option she has is to tell on them, but again her friends may get mad at her, but it is more likely to keep her friends safe as well as herself.
