My kid is now acting like an obnoxious kid they go to school with

This happen to anybody? There is a night and day difference in her behavior after spending time with this kid outside of class. 4&5 year olds. What is the solution, just cut off contact? I point it out to my daughter and she doesn't seem to really get it, that she's acting like this other girl. via /r/Parenting http://ift.tt/2vEN3UF