my daughter is 14 and regularly bullies and insults me on a daily basis. its escalating and getting worse. I am a working single parent who has supported 2 kids without any help from their dad. She has seen 3 physiologists throughout her life (the break up with the father when she was 3 was very messy). she is affecting the behaviour of my son who is nearly 12. She has no boundaries, though I am constantly trying to enforce them, she has no empathy and is narcissistic. she is always causing arguments with myself and my son, and regularly becomes violent, especially with her brother. she doesn't care about anything. She never takes responsibility for anything (she always blames someone else, usually me, even when she hasn't done her homework). I'm really struggling and it's starting to affect my mental health. Even my close friends are commenting on her outrageous, unjustified, turbulent behaviour when we are together. She disrespects both me, her father and my friends and everything I do for her. I've tried punishing her by removing her privileges, talking to her (but she doesn't listen) and when I have the money I will take her for more counselling. Can anyone else suggest anything please?