Harsh as it may sound, it is her baby, if you have given ehr your recommendation there is not much else you can do, excpet, I don;t know how old this girl is but you could ask her mum to maybe have a little word. If your friend is drinking loads maybe there is another problem that needs addressing, are you sure she is happy with other aspects of her life? Ultimatly its up to her how she brings her children up, even at this early age, and no authorities can step in, short of doctors advice, until the child is born and if she mistreats it then.