Living alone at that age without parents being near, i am sure the girls go through a lot emotionally which might affect their entire life. Not to forget that they will be called Kumari and worshipped at a such a young age and once her days are over (i am not sure for how long), she will be sent back and have to be normal again. All this will definitely impact the psychology of the child. Seriously, our country should get rid of this tradition.