it's explicitly a test case, so as well as the rights of those two parties there are another 80 or so specific cases reliant on the outcome and some 250 per year children born with FAS. So if the justice system is not the place, where is?
I presume you agree that society as a whole does not want preventable harm to be caused to children? If this case recognises that the child victim has rights that cannot be dismissed then there is clarity about the legal duty on the woman herself to not cause harm, also, as I mentioned above, there will be explicit duties placed on all professionals involved in the care of future expectant women in this position as well as at least some implicit responsibility that will be much clearer to friends and relatives.
If that does not happen, what mechanism will serve to protect future children from this harm? Or is society expected to accept that some, specific individuals can behave as they please and any damage caused is merely collateral?