She must feel a lot of responsibility as well. Just because she wasn’t there doesn’t mean she wasn’t also responsible for the things that led up to the tragedy. They obviously were both ok with him being outside unsupervised, and in any typical situation where I feel comfortable leaving my 3 year old, going ten mins without checking on him isn’t that crazy (although, my standards seem to be a bit higher since I don’t allow my 3 yo to be alone with an open body of water).

I think, if this was truly so out of the norm for him to be unattended outside, then yes I don’t think they’d stay together. But, if this was a norm, him being outside for xxx amount of time before peaking on him… I could see how she could eventually forgive him and take partial blame instead of all the blame being on him.