OP has said elsewhere in the thread that they knew this couple at the time and she did not have a meaningful say in the situation. She was threatened with divorce if she had gotten the vaccine. For a lot of women, their economic situations are such that a sudden divorce would likely lead to poverty and homelessness as well as loss of meaningful support for any of their children.
Then you don't have a very good understanding of what domestic abuse situations are actually like. I hope that you can expand your understanding through empathetic learning and that you don't have to learn via personal or close vicarious experience.