Yes, newborns are a good analogy as they are about as helpless without somebody feeding them, however, we do not have a practice of state intervention forcing m

Yes, newborns are a good analogy as they are about as helpless without somebody feeding them, however, we do not have a practice of state intervention forcing mothers to keep and feed their newborn kids if they refuse, quite the opposite, we provide means and process to relinquish these newborns and have the state take over their care. In a similar manner, if the state would want to take care of the fetus that a mother refuses - transplanting it instead of aborting - that would seem quite reasonable, but as far as I understand we don't (yet?) have the medical/technological capacity to do so at an early stage of the fetus.