I am sorry to read what she wrote, but as soon as I read your post, I thought that might happen.
She is married to him and apparently wants to be. She has to "believe" him or at least go along with the party line that justifies her staying w him in order to survive in her situation. No matter how much she cares for you, she is married to him. There is more at stake w him than w you.
I would not recommend emailing her back. Let it sit and see if another contact is made. If you don't engage, that sends a message that you are not stooping down to that level. Also, I would not be around that man again if you can help it.