I know it’s difficult to answer. But I’ll answer where you failed to. I would have to prevent Tiller from killing the baby in that case and suffer the consequences.
I would wait until the baby is almost out of the womb, push the forceps away, and run away with the baby to a secret location. Repeat 10,000+ times. The tough part would be sneaking into the ventilation shaft that many times.
I see you answered your own question. I strongly agree with you.