So the husband job now is to protect the kids from his wife? If that's the case she should have been locked up. You really seem to be putting this on him, and it's not. She did the evil thing, not him. I'm sure he's going to think about it the rest of his life, but there's really nothing he could have done to prevent it. Is he supposed to lock her in her room while he takes a shower? Make her come into the bathroom and sit there when he takes a shit?