Keeping your child sheltered or being a helicopter parent presents problems of its own.
Allow your child an appropriate degree of independence. Let her go out with friends, but in the right settings. Let her negotiate with you about what is expected of her, her curfew, what her chores are, and when they need to be completed, etc.
When there is a healthy two-way interaction between you and your teen and your expectations are clear it will help her learn to navigate the waters without you.