Obviously you are a friend and supporter of the ex-husband and therefore are a biased reporter. So what exactly are you looking to gain from bringing this story to the CR? Do you believe people will recognize the characters in your story? In that case this would be loshon horah and motzi shem rah on this woman.
Are you looking for advice how to approach her? Did the ex-husband ask you to get involved somehow and get advice how to stop it? What exactly is the point of this thread? You are relating a very sad story, with children involved, and judging the people involved even though you were not a fly on the wall when they were married and know the full ins and outs of that situation. You are assuming that you know everything while peering in through the windows seeing what you choose to see and making a judgment call. Maybe this man learned from his mistakes and is treating his second wife completely differently that he treated his first. This too happens. Maybe he went for therapy and he now understands what HE did wrong. Did you ever think of that? That he learned what NOT to do a second time around? Are you a fly on the wall of his new home? How privy are you to his personal life and what he does on a daily basis?
Are you getting my point here? You really don’t know the whole truth about any of this. You only know what you think you see. And you may also be 100% right. But if you are not here with the purpose of helping either one of them because you were asked to, what is the purpose of this thread? I am asking this as a coach.