My husband and I have a new baby. While my step daughter was visiting this weekend (she`s 3), I caughter her glaring at my son in his cradle. She was looking at him with disgust, like she was going to try to hurt him. When she noticed that I caught her she gave me this little guilty smile and said baby… I felt sick that a)a child could try to deceive me about her intentions and b) that I wanted to slap the little smirk off her face. Instead I said, excuse me little girl but don`t you ever look at your brother like that again, that wasn`t nice… She just stared at me blank and her father didn`t say a word to her and now I want to smack him too… What should I do???