My husband has 2 kids 3 and 6, I have 11,8,7 year olds. We have lived together since June.

My 7 year old girl is not dealing with her new step sister (6 year old) very well at all. Her behaviour has gone from being fairly sweet most of the time to rude, violent, obnoxious and selfish towards me and the step sister as well as her bio brother and sister. It’s at the pulling hair, kicking and screaming, swearing stage. She is impossible to live with when all the kids are together. Step kids go to grandparents house every second weekend, it is so peaceful then. As soon as the step sister is back, the fighting starts. My SD does provoke my DD and she is an extremely annoying child, my other two kids manage to ignore her most of the time but my 7 year just can’t seem to let it go, she bites every. Single. Time. When my husband is home, SD is on best behaviour but my DD still gets irritated and annoyed by the smallest things SD does.

I am 39 weeks pregnant and just don’t know how I am going to deal with 5 kids - 2 of whom just can not get along - and a newborn. I separate the two girls, I spend as much one on one time with my DD as I can. I can discipline SD as I see fit, my husband is very supportive. Does anyone have any advice? Should I take DD to a counselor so she has someone to vent to? I wake up at night thinking about the fighting and both girls behaviour and I just don’t know what to do.