Hello all, I would like to get some advice and vent. I am 45yo my girlfriend is 48, she has two daughters 11yo and 15 yo. The oldest has to be the center of attention, will interrupt everyone to get her mother's attention. We had a rocky relationship at first but smoothing out now (knock on wood). The youngest is hitting that dripping with attitude age, and she is immolating her older sister. My girlfriend is more their friend more than their parent, and when the girls act up and gets attitude with their mom, i foolishly step in and that is when my girlfriend cuts me off at the knees and automatically sides with her daughters. I learned since to stay out it and shrug my shoulders. So tonight the youngest was telling how bad the kids were being on the bus. I made the comment that when I was her age the teacher would pull us by the arm have a talk with us. I absent mindlessly grabbed the youngest arm. The youngest pulls away as if scalded and acts like I was going to be mean to her. I told to stop over reacting and why was she acting like that and I explained that I was just showing her we were grabbed. I was pissed and hurt, and ask her why she is acting like this. My girlfriend freaks out and tells me to leave. So I left. I have texted that I apologize, but feel pissed still. My question is what do you do? They have no respect for their mother. My girlfriend has to yell and scream and the girls just keep on what they are doing. It pisses me off, but I don't want to get into a fight. as a side note, the girls father's wife disciplines them and the girls do not like her. Thank you for listening and any advice is welcomed.