Keep the faith! My daughter is 18 and she has been a blessing. She had some rebelious days mostly sassy when she was 11-13. She has had lots of restrictions but she knew what they were and they were set in cement and there was no way around them. Some where no dances until she was 14. Not dating until 16. No sleeveless prom dresses. No boys in bedroom. No just dropping off at the movie theater on friday night. I think if kids know their limits it gives them structure.
One of the best things is to encourage good friends. Also church life has been so helpful in finding good kids to associate with. There are so many good kids out there. My daughter was in student government all thru high school. Student body president her senior year. Encourage to work hard in school and try to get into the advanced classes. That is were alot of good kids are. Sports is another thing to encourage. Keep her busy. Not just in her room listening to music. There is not much good music out there. It is a downfall of many teens today. Just a few ideas. Hang in there as my daughter is my closest friend.