i have my 3 year old daughter visit me most weekends and since we got married a year age she refuses to talk to my wife, sometimes refuses to eat. and since the birth of my son 2 months ago its got worse. from the moment she gets up to the moment she goes to bed she is constantly refusing to do anything we ask, and now she ignores me too, there is just no reasoning with her what so ever, she says she will behave but 2 seconds later she is in trouble again anyone any advice?