I am a mother of 4 years 4 months old daughter. I am a working woman. my husband looks after my daughter at home. in my absence he taught my daughter against me. one day when I returned home, my daughter said to me that 'mamma, papa is saying that you will kill me. when I do video calling from office, my husband on the television, and set cartoon program so that my daughter can't talk to me. when I asked all this question to my husband he started fighting with me.now my daughter doesn't speak outside home not even smile. Doctor is saying that she has selective mutism. what should I do? please help