I have 3 kids, all are good but i worried about my middle daughter Ayesha , she is 2 yr 1 month old she not responding as my other kids are. I know she is listening to me n understand what I am saying but doing (responding) nothing. not talking, not playing with other kids, only play by herself. when I pamper her she enjoys but after that nothing. as a mother, what should I do for her ? please suggest.