If the medical records are accurate this is the right decision.
If multiple, independent tests confirm Trisomy 18, then it is the right decision. Heartbreaking for the couple.
It sounds like her body is already trying to miscarry. While what is normally medical intervention to prevent miscarriage to a standard level in society is normally appropriate, simply not providing this on the next trip to the emergency room might terminate the situation through what used to be known as a “spontaneous abortion.”
This is how the system is supposed to work. Not sure why this is the big deal that it seems to have become.