C.C.
Hello N.. I was having the same problems with my 5 year old daughter. i got some advice on using a system called mommy dollars. I made a chart with 5 things on it a day that she has to do if she does them she gets a mommy dollar if she is bad she looses a mommy dollar. When she gets a certain amount of mommy dollars she gets a special treat. Ever since I have started it she has been an angel. i think it really works so I think you should give it a try and see if it will work for you. Also she could be acting out if she knows that you and her father are having problems. My daughter started being really mean to her dad when we were going through a rough time. We are no longer together and I know that is part of the reason she acts out like she does. let me know how it works.