Mothers who give birth to drug addicted babies...what punishement should be given?

People do long prison sentences just from selling near certain miles of a school. What punishment if any should be give to a person who actually feeds their unborn child a drug? Harsh pusishment, unharsh punishment, just drug treatment? This is a very serious question to me, so your mature thoughts would be greatly appreciated. Do you think this type of person should be punished like a drug seller/buyer? Thank you all….