Girls do hate their baby brothers. in fact it is not about girls it is about all older children. it is natural phenomena and many psychotherapists believed that it is important for the parents to recognize that and react appropriately i.e with patience rather than getting aggressive scolding the child or asking him to go out of the room. as if the siblings are separated in such a younger age they would never be able to develop a lasting bound of friendship and love with each other. the spacing among children and the age of older child doesn’t matter a lot. however,the way the older child was treated before the arrival of his or her younger brother or sister is important.