Upbringing and Tarbiyah

Q: My daughter is 12 years old and she does not listen to me. She has very bad behaviour. Something been done to her. Please could you help me?

Q: At what age is one deemed baalig? From what age does Salaat and fasting become compulsory?

Q: I have a baby girl and we cut her hair. At what age should we stop cutting her hair and grow it long?