I'm sorry, but the moment a woman
chooses to CARRY that child to birth, ANY thing she does to harm it or that can potential harm it is ABUSE.
I will
not be an accessory to abuse. You choose to keep that pregnancy, then you immediately become responsible for its well being and aside from your own death/harm, you should do your utmost to protect it, as you have CHOSEN to carry it.
Now if she was planning to abort then by all means, drink away.