An ectopic pregnancy would risk her life and her future fertility. Babies with anencephaly do not survive for long after birth, being stillborn (around 75% of them) or dying within hours or days; this pregnancy wouldn't risk the mother's life, though, but would be traumatic.
Without googling the definition of ectopic, we’d likely abort anything that put her at significant risk, or in the case of a major defect that would ruin all three of our lives.
States with very strict abortion laws or where abortion is illegal would prevent your wife from having an abortion in the your and my scenarios. She might be forced to delay the abortion until she ruptured in the ectopic scenario, or be forced to give birth to a dead baby or.one who died in a few hours. There are other dangerous scenarios when an abortion would be the humane option. This is something to keep in mind when voting or supporting candidates. ETA: I didn't mean this to sound like a lecture. I was just pointing this all out because you actually don't sound ring wing based on how you described your beliefs.