That's awful. But you are doing good by keeping him busy and off the sauce. I know it's tough to say, but he is better off without her... I don't know if there will be another in his life or if that's even what he wants, but he was screwed the moment he said "I do" to this woman.

And there was a death... it was the relationship. And in the end, her children will likely have resentment for her. Regardless, your buddy has no obligation to them unless he wants it. Our system is rigged hard against men as you see... people wonder why MGTOW is gaining popularity well... it's cause of stories like this. And no, the answer is not to shame or name call. The answer is to unfuck this fucked up system.