I don't have to give you anything.. but I think my reasoning was perfectly clear in my post, which you obviously failed to understand, as I predicted some people would, some people can't wait to work themselves into a lather.
I never said she should feel guilt, no one in their right mind would even think that, but chances are she will feel guilt, she will still love him, and she will feel responsible if anything happens to him, he is the father of her child/ren and until yesterday OP had a perfectly loving husband as part of a happy family, she has been completely blindsided and it takes time to work through situations like this, you can't just switch your feelings off and chances are she will feel all sorts of confusing things in the aftermath of him blowing a huge hole in their lives.
People expecting her to immediately hate him and pretend he doesn't exist when you have children to think about are completely deluded.
So my advice in my post was, to offload the responsibility of thinking about his wellbeing on to someone else, so OP doesn't have to bear that burden herself, there's a chance he will try and get to her that way, through guilt and obligation, so it would be beneficial to tell people close to him, so he can be their problem to deal with, instead of OPs.