I'm a single parent and have always had a close relationship with my daughter. She is turning 13 soon and over the past year or so we have been struggling. She found the transition to secondary school very tough and has been distant, emotional and unhappy. She thought she was depressed but the gp said that it was probably just the secondary school thing but to bring her back if it was still the same during summer. She was a bit brighter over the holidays but now that school is back, I've lost her again. She says she is happy at school but at home she is irritable, lethargic, rude and withdrawn. She seems happier with friends and at her dad's which obviously makes me feel crap. We argue every day and I'm so worn out with it all. There was a couple of weeks in summer where I had my happy fun child back and I realised how much it had got to me. She doesn't want to go back to the doctors. I don't know how to break this cycle. I know that I'm making things worse but I just don't know what to do now. I see friends with their cheery polite friendly kids and I just feel like a failure. Any advice?