Probably best not to, but I would be tempted to go back to him and confront him. People can learn from their mistakes. Maybe he’d be willing to learn.
Don’t know if she ever did. The diagnosis (or do they call it prognosis) was based on law of probabilities. I believe it was the amniocentesis lab work? Among her other career skills, she is a nurse today and has 4 healthy children. Now grown.