This happened a few days back..................I was talking to my mother in law................I address her "amma".................A niece of mine who was hearing me talking to my mother in law asked of a sudden "Is she your amma??????????"I without having doubt told "yes she is my amma" ..............Instantly she asked me "then how can you marry your own brother??????" Those who were hearing this were shocked to hear these words from a 4 year old girl.......