To help form your daughter's good character, you need to know what you're up against, including what she is hearing about herself, about sex and marriage, about right and wrong. You need a plan to train her in righteousness and wisdom. She needs to learn what God's Word says about her, her character, and her relationships to others. You need to show her Jesus by the way you live, how you treat her, and what you teach her. Above all, you need to pray that God would change her from within.