Why?  Just put the baby up for adoption and then the biological mother becomes irrelevant.  However, the mother should have had the right to terminate the unnecessary birth. 
I see you don't like giving straight answers, which is fine because this is only a message board and nobody has to say anything they don't want too. 
But here is what I'm getting at (or trying to understand):  where do you draw the line, logically, between the ability to kill a baby after it comes out of the womb?  Is it before the cord is cut?  
Overall, there is no logical distinction between a newborn and a third trimester baby at say 38 weeks.  The lungs are the last thing to develop and by 38 weeks they are good to go.  A newborn is just as dependent as a third trimester baby.  Arguably, a newborn is more dependent because the baby has to be fed, changed, held, etc., whereas an unborn child has the cord and placenta providing everything the baby needs to survive.